I am trying to set up my carbs. I previously found that cylinder 3 was sucking less air than the other cylinders. With the snail, it was always one number below the other cylinders (air bypass needles all turned in fully). I searched the engine and saw black soot and slight oil leaking where the cyl meets the head. I figured that the cyl was sucking less air because it was getting some air from the leak.
I then took the valve covers off and found that two of the head studs for cyl 3 were very loose. I went through the torquing proceed and retorqued the head. I then pumped compressed air into cyl 3 and listened for leaks, I could not hear any leaks. I also rigged up a gauge and the cyl seemed to hold 150 psi for at least a few minutes. It seems like retorquing the heads fixed the leak.
When I was putting the rockers back on, I noticed that the arms for cyl 3 seemed to have a different geometry than the other cylinders. I have elephant feet and on the other cylinders, the elephant foot screw is screwed in almost all the way. On cyl 3, the feet are almost in contact with the rocker arms (this is the way that is was prior to disassembly also, so I don't think that it is from a poorly set pushrod). I also noticed that the cyl 3 rocker had smaller shims (about 1mm smaller).
I got everything back together. I started the engine. Idles somewhat rough. Cyl 3 sucking 1 point less air than the other cylinders.
Is it possible that the person who built my engine screwed up the rocker geometry for cyl 3 and this is the reason for sucking in less air? Any other ideas?