I use my standard Hobbico Torqmaster 90 12v starter, but I have to hook it to my car battery. My starter panel won't pull it. I saw a post either here or on www.spadworld.net where someone had mated an 18v cordless tool battery to their starter to use like one of the purpose built battery packs.

I've read both ways to set the needles. I think the way I did it was tune for the leanest idle I could get, then richen it a bit. Then once the low end was set, I would goose the throttle and if it hesitated any, richen the top end until I could give it full throttle. There was a good article I read describing this procedure and if I can locate it again, I will link it.