I installed the TBS needles. WOW!! What a difference. In the process, I ran across something I had not seen in 4 years on this site. After installing them, but before I replaced the gas tank, I checked the manual again. It said "Insert the needle into the piston and fit the retainer. Position the retainer so that it does not block the air hole in the pistion." AIR HOLE IN THE PISTON? I took the carb tops off and sure enough one of the retainers was covering the AIR HOLE, which I had not even noticed. The air hole is clocked straight forward. I rotated the retainer and put it all together again. It runs fantastic! What would have happened if I did not "uncover" the air hole-I don't know. But I write this so people can be aware to check the retainer "clocking" position to ensure the air hole is not covered.
Last edited by tomv; 10/08/2006 8:43 AM.