before you do look into the bore real close and see if a fine ring has formed at the bottom of the bore

should just need to losen the hose clamps so you can rotate the carb a little and remove the 4 on top that hold the diaphram plate down and the spring, diaphram slide assembly will slip right out -

1 other thing I forgot to ask - you do have a brass washer under the mainjet right?

i will do  the cleaning and stuff this weekend, the bike was doing this when i had 155  main in i thought it might be to big so went down to the 152.5 and come to think of it i might have left that brass washer out i will check this weekend if so where would i get a new one? i think it is the dirt or finger print deal though cause thats when all this started when i did the whiter spacer

I dont see an answer to the idle question. How high does it idle? How fast are you running when you let off the throttle & it dies? ine dies when I let off at 60 or so..

Then I would think the idle may be a bit low. Mine dies if I just let off the throttle ate highway speeds, if I will play with it & allow it to drop RPM more slowly, it will keep running. I kinda wonder if at speed, the airpressure under the seat is low enough to make this happen. I wouldnt worry about it, I think its pretty nowrmwl. BUT, others may disagree. You folks? Yours die if ya let the throttle close at 60?

I think mine is 2 maybe a tad more,