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I'm in the same boat. Trying to dial in VM30s. Find anything out?

Raised the needle back to the middle position and what a difference! It has such a smooth power delivery now. I dont really understand this now though since I was already in this position before but with lower pilots? Maybe the transition was too much? Anyway after a good long ride I think I'm...

I ran it with the tank. I went up in pilots from 25 to 27.5 thinking it was lean from the clean plugs at idle. Doing that, idle to 1/8 throttle is so much better! but beyond that it fumbles around. I took it for a ride and came back and the plugs looked like this: That is white on the top...

Well this is starting to get frustrating.. Trying to check the pilot system I put new plugs in and started it up and let it idle for about 5 mins. Killed it checked the plugs and they still looked new. Can you check the pilot system off the plugs? After that I tried messing with the air jets...

Okay I called up sudco and they recommended 150 mains and 25 pilots. I got those in now and its still rich. I've yet to sync the carbs but I already know I'm still too rich. Plugs are black and sooty and falls on its face when giving throttle quickly and given full throttle. The idle is close...

Okay thanks I must be kind of close then??

Hey guys been awhile since I've been on here but I'm back at it with my build on a 79 XS400 bobber First off here is the build if you'd like to know anything: http://www.xs400.com/forum/showthread.php?t=4796 My problem is my jetting. I know that not many people with the 400s (besides cb's)...