I am reposting for my problem with the 2001 yzf 426 not starting so you dont' have to look through 2 pages...heres a specific question...I pulled off the accelerator pump diaphram and next to it another little diaphragm with a brass piece going up into the bottom of the bowl...Is there where the gas comes in? I cannot push that piece of brass down and from the inside of the bowl it looks like a little ball, is that how gas gets in? Problem or no problem? Also someone told me something about a piece of lead thats in these and you can drill it out and remove it? Thanks to all who help.