I will go ahead and order the Dynojet 2152. I figure on the Dynojet a 128 main, needle on third clip from top, 2 1/4 turns out on the mixture screw. Sound like a good starting point? Keep in mind I ride at above 5000' with FMF slip on and no snorkel.

 

I am at 3200' elevation and I went with a 124 main. However, I have a snorkel in mine and that makes a difference. My bike could probably go up to a 128 but it runs fantastic right now. So I would bet a 128 should work okay in your case but it might be just a tad on the rich side.

Also as someone else mentioned, order the $16 Kouba fuel screw, I think I got mine from carlscycle.com. Makes it easier to dial in the carb.