Just finished getting the shock re-valved on Friday and went out to the track to make some adjustments this weekend as to be ready for racing next weekend. I'm out on the track 30 seconds and wind up on my face.... front end washed out in a corner..... Knowing that this is how bad days start I figured I'd just take it easy for a bit. When exiting the track the beast really starts running like crap so off to the pits I go. All of a sudden she shuts down. I figure the temps are about 88 degrees and I should richen my mixture a bit... I reach down and....Holy Crap! the Fuel screw is missing..... Damnit... I just put that damned White Bros fuel screw in three weeks ago..... I got semi-Lucky and started back tracking to the point where it started running bad....and low and behold...the fuel screw was glistening there on the sand..... I say semi lucky because the spring was nowhere to be found and forget the little rubber o-ring that goes on the end.... I tried to find the spring and ring this morning....Might as well be looking for a rocket engine at this point.... so now I have to order the Pilot screw set from Yamaha.
....It will be just my luck that the warehouse in Atlanta doesn't stock it and I'll have to wait 5 days for it to ship out of CA. I never had this problem with my Kouba , atleast on the 99 YZ if the screw vibrates loose it will not fall completely out of the carb..... Another bad design from the Yamaha
Factory team that I'm going to have to find a fix for....