<VV> Idle Problem

[Jim Houston]

I'm helping a friend and have been returning his 67 vert back to running 
after sitting for 2 1/2 years.  I rebuilt all 4 carbs (and had them 
checked by the Carbmiester), replaced the fuel pump, fuel lines, gas 
tank, and filter screen (on sending unit).  The engine starts and runs 
fine above about 1200 rpm...  below that -- it just will NOT idle!!  I 
have checked all of the linkage, verified the clearances on the idle 
speed screws, checked the mixture screws (several times) -- all to no 
avail.  I am at my wits end...  does anybody have suggestions of 
something that I have overlooked??   Oh, I verified the timing -- but 
haven't replaced the plugs.  Being fairly new to Corvairs, I have run 
out of ideas...

Oh, the engine is a '67 AIR 110 with 140 heads and carbs.  (Sounds 
really good at higher rpms...)

Jim Houston
Brandon, FL