Re: 42 miles of He.....
Just because you've put x miles on a motor doesn't mean it's broke in. Dan said it best, when a motor finally breaks in you feel it, the rattles and noises suddenly go away and it just begins to purr along, it's almost like Nirvana. lol
I have to 2nd the BGF kit, other then soldering and drilling the jet I've had 0 problems with mine in almost 700 hard miles. Guess I got lucky though because my motor came with big downtube casting so no mods or special mounts were needed to mount it right on my Cranbrook.