tsubaki cb750 chain is what you want. any place can get it. riverside, or weymouth honda. definitely replace the chain if youre going in. if you need rings, let me know. i have an extra set of 1mm over honda rings for stock pistons ill trade you for beer money at summit or something. you might need to open up that cam chain tunnel a bit to get the slipper to fit. youll have to split the cases to get the chain off cuz youll have to pull the crank to do it. so youll be tearing down the entire motor pretty much. its a pretty big job and since you dont know what youre doing, id suggest pulling apart a junker first, ask questions, then do the real thing. id wait til next year since the bike seeems to run good. id sort that carb gas problem. you definitely have a fucked up float or float valve. i dont know why itd be fucked up from lying on its side for 10 hours....but theres definitely something wrong there. that will probably be enough to keep you busy til summit.