I would NEVER just jet based off of what the mfg. says. They give a very general jetting for a guide, but 90% of the time it's not where it should be. I ran 310 to 320 main jets in my banshee with the lid on but the back 2 inches was cut off, 300 to 310 with the full lid. Also, Fatties don't generally like a pilot richer than 30. 25 or 27.5 should do it. If I would have taken the mfg. suggestions and kept them there, I'm sure I would have blown a piston. They have no clue what else you have. Also, as Banchetta has proven. You can take the same machine, with pipes, reeds, etc. and go from the east coast to the west coast, same elevation and have a 2 or 3 size jetting change, so there is alot more to it than just elevation also. If you have no clue where to start, using the mfg. as a suggested baseline is ok, i guess, but always run plug checks and richen if ever in doubt. In fact, if I was clueless, I'd take the mfg suggestions and add 2 or 3 more sizes to it before I ever put it in my machine. All in all, 90% of the time, the manufacturers are clueless.
slowpokebanshee, that's not directed at you, i just wanted to clarify my opinion on this. i meant to earlier and forgot, and your comment reminded me.