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could a leaky primary throttle shaft cause a lean tip-in issue? thinking this may be the culprit of my lean cruising issues.

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I would try squirting some carb or starting fluid, very carefuly, a little bit at a time, around the throttle shafts with the motor running to see if the idle speed increases or decreases from the vacume leak If it does change that MAY be part of the problem

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I will most likely end up doing the BLP 2 circuit kit, but my issue was never rich and fouling plugs. quite opposite which I never found anyone on the web with the same issue.

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So at that spot where you say it`s lean does the wb see it that way? I test idle off idle on the foot brake fully warm and slowly climb up in the r`s watching/feeling what`s goin on then tune from there. I had a super lean spot above 1500 r`s when climbing up on the foot brake and fixed it w/a bigger ifr.............went from .037 to .039 and it`s sweet now. You MAY have a vac leak so get out the carb clean and find out and if not, well you know the drill.

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yes, it slowly climbs from 13.5 to 16.5 range at tip in while cruising or parked in the driveway.

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That sounds more like a vac leak

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yes, it slowly climbs from 13.5 to 16.5 range at tip in while cruising or parked in the driveway.

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yes, it slowly climbs from 13.5 to 16.5 range at tip in while cruising or parked in the driveway.

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Could be..........turn out the idle mixture screws and see what happens. Have you verafied the vac leak yet w/a cleaner?

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I was assuming he has messed with the mixture screws
to get it idling right... I still have no idea why
any of you even use the A/F meter for idle.. no 2
engines are the same... and NO ONE can give a number
of what it should be.. on a carb

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I agree, the a/f meter is a tool to help tune carb. don't know why anyone would want to tune by ear. i'v done that in the past and the a/f meter is way quicker. dom, the carb is now in a box going back to dan davinci as he has asked for it back. thanks
also, put 950 back on and it runs perfect. no issues

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Ok.... so whats my perfect A/F reading at idle.... I
have a meter but I dont use it till I have it idling nice

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well, innovate suggests between 13-14.7 as a target. that's where I set mine. (13.5-14)

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Thats pretty good when they have no clue on my cam..
I'll still stick with the way I set idle.. takes
maybe 5 minutes after the engine is warmed up

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I agree, the a/f meter is a tool to help tune carb. don't know why anyone would want to tune by ear. i'v done that in the past and the a/f meter is way quicker. dom, the carb is now in a box going back to dan davinci as he has asked for it back. thanks
also, put 950 back on and it runs perfect. no issues

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I`d run the 950 over that dommy any day then I`d convert the dommy to a 2-circuit and be done w/it.............

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that is just a suggestion by innovate. I understand that every program or combo is different. their suggestion worked for me. I could of set mine at 12.5-15:1 as it idle the same, but I ended up with 13.5-14 which is right in the middle of their suggested target.
you mentioned getting it dyno tuned awhile back. well what do you think they use to tune your carb with for best a/f setting? an a/f meter. theres reads out on a pc screen, mine reads out on an in car gage. same tool

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On the dyno they didnt touch idle... we jetted for
max power... when I put the engine in with the trans
I set the idle mixture and idle speed
EDIT
and yes they did use a A/F meter to set the max power
but they also went higher and lower to see what the
dyno said... and if you call that the final jetting
your wrong.. you need to go to the track and jet for
max mph... then take your A/F reading and see what
it is as a reference point so its easy to get back to