Thanks for the link, I'm starting to get it now. I had thought that the sealing surface for the drive sprocket was what is in the way but I realize now there is a whole lip around the seal that it is "bottoming out" against, from the inside. Thanks Honda. I like your idea but I think "coin slot" is a better name. Dang, I looked for info on how to index the boots but couldn't find anything, all I saw was that my boots had "CARB" molded into the top side. If anyone has pictures or more info on how to orient the boots that would be great. Regarding taking the carbs back out, I think I'm gonna have to send them to a rebuilder. I just have no clue what I'm doing on a v4 carb setup and don't have faith in myself to do it right on the first try. The issue really is that the bike will stall straight away if I don't keep at least some amount of choke on. It also takes forever to warm up. I guess the first thing I should check is that the choke cable is adjusted properly. I just checked that the rotors are good with the pencil trick. They seem fine, though there is a little scuff on the caliper where it hit the pavement. Might be a very small bend that is just barely making contact. I have to imagine there are some thousandths of play in the front wheel bearings. It's also possible the sound is coming from the back end. Thanks everyone for all the help, I'd really be lost without this forum.