107 is .031 intermediate...main .076....111,113,117,124 is .031 intermediate ... .078 main....but thats starting point have to tune from there...idle air screw is usually around 1 1/2 rounds out from bottom if all is set right...u can tweak 1/4 turn from left to right for fine tuning from the 1 1/2 turns out....screw it all the way in but NOT tight just let it touch then back it out 1 1/2 turns and start the bike and see how it acts then go from there....if rich screw it in a 1/4 turn....if lean of course screw out 1/4 turn....idle air screw is just for idle to 1/4 throttle....then intermediate control 1/4 to half throttle....main controls 1/2 to wide open