I was a machinist, manufacturing medical device equipment. After trying to adjust the air/fuel screws the first time, I took the stock screws out and drilled out the threaded end and made thumbscrew extensions to fit on that end and used permenant grade LOCK TIGHT. The carbs are BSR37-2 type, finding these or parts for are few or not at all. Seems like Yamaha went to a different model carb. They stopped making the 1100, so parts are a salvage hunt. 1300 fuel injected was the replacement, or so it seems. I'll turn screws out 1/4 turn after I get the bike running. One end of that connection goes to the stator, does the mating side of that connection go to R/R?