Re: carb issues
Not taking anything away from Jester, cause he's never steered me wrong, but I don't see how changing squirters will solve your shutter problem. 
The squirters only provide a shot of fuel when the throttle is pressed to prevent a lean condition when the throttle blades are initially opened. They do nothing for part throttle conditions.
If you don't have a stumble or bog off idle, then I would say your squirters are fine.
Jester, did I miss something on your line of reasoning here buddy?
I've been reading some of my HOLLEY CARBURETORS book and thought I was starting to figure out how these buggers worked.
I'm also curious who's method of figuring the correct PV is more accurate....PKRWUDS or Holley's.
Holley says to check vacuum at idle, in gear and PKRWUD says check it in Park.
I ordered an 8.5pv today so I must have decided Chris was right 
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'82 GT 351W (.060)Comp Cams 274* Extreme Energy cam, ported & polished heads w/ 1.94/1.60 valves 10.3:1 flat top pistons,stealth intake, Mallory dizzy,Holley 750dp carb, BBK shorties,Flowmaster exhaust,C-4 with 3700 stall converter, B&M pro shifter,8.8 rear, 4:10's, subframes, electric fan, powermaster alternator, 4 core radiator.
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