Which kits are the "quality" kits and which ones just plain suck? Or if you'd rather not name names on here I can email you. I'm asking because I'm about to rebuild mine and have been looking at kits. Everyone claims their kits are the best of the best, ethanol resistant, blah, blah, blah. The only difference I see is in parts count.......some come with a number of fillister head screws and some don't. Otherwise they all seem to have the same bits. So please.........do tell.