carb

Hi, I am restoring my 2000TC. I bought an abandoned and annoyingly incompete project, yes I know I was asking for trouble :) The engine was seized and I have it running nicely now, thanks to some new lids and stay up ethanol safe floats from Burlen (aka SU). My next challenge is the throttle...

Just replaced a set of plugs in my 3500s to cure a misfire. Noticed that plugs 4,6,1,7 were sooted. This hints to me that one of my carbs is either a bit rich, or the choke might be not coming fully off on that carb. Question is... Which carb feeds those 4 cylinders? Also can anyone point...