I had a K&T 350 with the same carbs (34 Mikuni TM's bored to 35.5). I ran the 5FP17 needle in the middle (3rd from the top) For the pilot jet I ran a 80 or 85 with the air screw 1 turn out. My power jet was adjustable and it had a range of 6 full turns I ran it at 3 full turns open. For the main jets I bought drill bits form a tool shop .110", .113", and .116" I drilled out my own main jets and normally ran the .113" When you drill out the mains you need to drill out the needle jet as well. Needle jet is 389 Q-2. So when you change jets you need to change the needle jet as well. The main jet and needle jet need to be the same size. I bought my needle jets form Sudco. My bike was drag ported and I had the timing at 7 or 8 degrees advanced. 17cc domes. Cpi inframe pipes. I duned my bike and this jetting worked great for me. I also mixed my oil 20:1 used Castor 927.
Hope this helps