Dick,
Thanks for the message about the venturi cluster. The tri power I am using is from an old 421 .. enter carb is 7026075...cluster is 7032380
When I built the 461 a few years ago I noted the following:
Idle tubes are 031
Top air bleeds are 039
Side air bleeds are 033
Chanel restriction are 046
I clipped the power piston one coil...starts to move@ 11 ...all in @8 inches of vac...idles @12 /13vac.
The base plate needle holes are 078 and the blades have 070 holes in them.
I don't have enough control of Idle volume and it seems a bit lean there with an early tip-in to powervalve...just guessing though.
I think the cluster has been messed with previously...it's not bad but it's not quite right either.
I'm thinking perhaps I should just send the carb to you if you would set up for me.

The engine is 461 long rod stroker with 300 KRE heads...Mike Jones hr cam 230/236ish on 112 @ 10.3CR
Reply appreciated
Roger Perry