Ta all..
Thanks for all your help. I finally fixed the biggest issue with idling and cutting out when choke is wide open. i Changed out the metering bock it did the trick. Replacement part from Holley was134-203 if anyone is having similar issues. Its completely different with imultion holes in different locations but working good now. Not sure what's wrong with my 6020 original metering block. Now I just need to tune it which am sure I can figure out. It's running bit rich but i think i know the reason why as have the outer carb mix screw at about 5/8 to 3/4 turn. I will wait till I receive the promax base plate before I take it apart again.
I put the 6.5 power valve back on and #65 jets. Also I was wrong on the throttle plates. They were 222 on the center and 226 for outer carbs.
Here are picture of two metering block and see the difference.
