87 Slabby flatslides in 1100 et, jetting

[HerbaKanki]

So, my '87 slabby lost compression on no. 4 cylinder, and it was the only bike of four, that was working. Need to have a bike to ride on, so easiest of the nonrunners, to fix is my 1100 ET. Money doesnt grow on trees, and I have shed full of old suzi parts. Decided to put my slabby flatslides to 1100 ET. I know its been done before, but can anyone point me to right direction with the jetting? 

[wraith]

Air box or filters, are you using?

If filters try starting around the 136 main jet, if air box try 125 main as a starting point.

someone will be along most probably how can tell you what there running 

[HerbaKanki]

Thanks! Forgot to mention that I'm using pod filters and the carbs are from 750R. Exhaust is open with Leo Vince 1100R headers and Ixil slip on can.