Hello everyone!! I am a sort of, car collector who tinkers on my old car collection. I am also a retired Ag. Sci. teacher of 28 years. My brother-in-law gave me two Manco's the other day that his son snagged from a go kart track going out of business. I got new tires, sprockets and clutches and hope to revive the engines. I am repairing them for my great-grand kids for summer. I have enough mechanical knowledge to just be dangerous and zero go kart knowledge. I think I have 2 of the 405 models. I will get some pics up tomorrow. The wheel situation has me anxious. I unknowingly thought you could do like my old cars and go to a site that was for the simple of mind, not so. The cast rims on each one of the drive wheels has a plug out of the side.