Hello..I recently picked up a 82 750 F with only 4000 miles on her which had sat for the past 20 years. I bought one new back in 1979 when I was 21! It is immaculate, rust free and with about 10 hours of cleaning looks perfect. My problem...It ran really good but was extremely hard to get started. Had to turn it over about 30 times each time before it would finally start. Of course needing to investigate, I pulled the carbs off, took them apart ( they were extremely clean ) used a can of carb cleaner and sprayed and blew out all the jets and everything I could. I put it back together and still the same starting problem. I pulled the carbs again and went with a 38 slow jet to replace the stock 35. I replaced the springs and o rings in the pilot jets. Cylinder 1 was backed out 3 1/2 turns, 2 was 2 1/4, 3 was 2 1/4 and 4 was 3 1/2. I changed them to 3 , 2 1/4, 2 1/4 and 3 to get them a little closer. Started a little bit better but wouldnt idle untill I backed cylinder 1 and 3 another 1/2 turn. Next I started playing with the idle adjustment knob. ( the knob underneath carb 2 and 3) Big mistake. Lost track of how many turns I moved the knob and now I cant even get the bike to run. OK...what to do now.....Does anyone know how to get the Idle adjustment knob back to where it should be without being able to run the bike? And shouldnt those pilot jet be backed out all around the same....maybe around 2 turns. Where would you guys start to fix my mess!!! I really dont usually screw things up like this. Thank goodness for fuel injection.