I was adjusting the needle (main) position on my '01 Fatboy since the top end seemed a little lean. It has a 195 jet and the stock needle. I had a small washer under the needle before, this time I removed that and just moved the "E" clip down one notch. This gives just a little more than the washer alone did. Put everything back, ran down the road and the dam thing wont bring the main circuit in!! Went back, thinking that I pinched the diaphram or something, and removed the carb. Put it back together, extremely carefully, making sure the diaphram was seated right. Went back out....same thing!! Now I am pissed. Take the carb BACK off the scoot, pull it apart again, redo the diaphram, etc. etc. This time I left the air cleaner off, and started the bike and revved it up to see if the slide was pulling up. It wasnt. Now I am stumped. I pulled the diaphram back out, it doesnt seem to have any holes in it. Is the only way to check the slide/diaphram operation to start and rev the motor?? Is there a bench test or a better way?? Maybe there is something I am missing here?? PLEASE SOMEBODY HELP BEFORE I GO CRAZY.