[stainlesscycle]

spooge is generally really rich which is probably why it won't idle. i would check piston and rings - you said no blowby though. bike will still run great up top with bad rings, it will rev out fine, just have less power. the bottom end will suck with bad rings.

the silencer also could need a repack.

are you fouling plugs or hard to start (cold or hot)?

if all this doesn't help, and you have good rings/piston, silencer, reeds, fresh fuel and plug. you gotta start at the beginning. the air screw will have no effect if the idle screw is all the way in. set air screw at 1.5. make sure there is slack in the throttle cable, so the slide goes all the way down and you can feel it hit the idle screw. back out idle screw till the slide no longer hits it. then turn the idle screw in about 1.5 turns. this is about where it should idle.

the flat spot should go away, but it probably won't idle.

i would think deal with the flat spot first, then get it to idle. try moving the needle 1 clip in each direction and see if that fixes flat spot.

turn idle screw in another .5 turns. turn air screw out 1/4 turn at a time, pausing 5 - 10 seconds until it races. stop. don't go out more than 3 turns.

if the air screw has an effect, then you just need to reset your idle. then you can tweak throttle response...