???Help! I am working on shimming my needles. I started with 2 #6 stainless steel washers, then went to one. Both times when I started my bike it ran like crap. It was OK for about 30 seconds then it was like it wasn't getting enough fuel. I noticed that there is a small hole in the bottom of the hard plastic piece beside where the needle sits. The circumfrence of the washer looks like it was blocking the hole.