ok I see how you have that plumbed but there should not be any fuel or oil coming up the line,imo

from the q,a on bg link[Open Reply - John
The Barry Grant Demon inline blower carbs number 91012062 for 525cfm, 91012064 for 625cfm, and 91012066 for 725 cfm carburetors are designed strictly for blower or supercharger applications where boost is provided. The power valves and internal components are changed and become load sensitive for smooth operation. The vacuum secondaries are desired for street use and obtain the vacuum at the base of the carburetor. A blown or supercharged engine does not develop vacuum at the intake as a normally aspirated engine and therefore must draw port vacuum at the base of the carburetor.]I think you are just connected to the vac for the sec diaphram[why it sucks fuel,oil]The boos ref pv is at another port or metering plate.

there is no other ports that are open aside from these two
the vacuum secondaries get theirs from inside of the carb.

Please put a second spring on your throttle. For your safety and others.

Good luck with it, looks great!!

the carbs actually fall back to nutreal on their own
the peddle has one as well i like the feel. but sure.
the dash has ign shutoff by switch >.<
its getting there
need dash plate,
tackle oil leaks
dual 3 'exhaust (prob xpipe two glasspacks and my mufflers dumped at axle)
afr sensor
dyno time
jetting
hood work
decals
some interior
shorter rear shocks (theres 1 inch before bottom)
for whatever reason i bought shocks that were stupidly too long
probably for oem mounting locations.

eye candy is here and here. sadly the memory card lost the engine and transmission buildups.

https://imgur.com/a/Z8ZsQ
https://imgur.com/a/OHeK8
https://imgur.com/a/iZPDI