Dave wrote on 06/13/17 at 02:42:48:If you have an adjustable needle, you may just be able to move the clip to raise the needle and not have to trim the spacer.
I took my spacer out and put in 3 number 4 machine washers. Most of the time that works fine - my Savage still had a lean surge when applying light throttle, and taking out 1 washer got rid of it. With a Stage 1 cam, 95mm Wiseco, stock paper air filter and a Dyna muffler my carb was happy with a 150 main and a #50 pilot and 2 washers.....I ride between 500' and 800' elevation. The other bike I jetted was stock with a DYNA muffler and it wanted a #52.5 pilot and it was OK with 3 washers and it never had the lean surge (we do have 10% ethanol in our fuel).
I had a 150/50 with the stock muffler and it worked fine, but after the Dyna installation it was seriously lean. Approx 300' from sea level.
I use the E5, which has 5% ethanol. I think the the E10 isn't recommended with a high compression piston.
Going to move the clip to lowest groove, we'll see how that affects the midrange.
Removing the idle mixture screw was a nerve wrecking operation, came out in three separate parts
Still have to open some threads when I get a M6x0.5 tap.