well he's got an elite and i got the thing running for him the other day. its got over 7500 on it and the spedo it smashed so i dont know how fast it went but it had bad take off and seemed to stutter going down hill and when on flat toped out. it felt like it did a decent 25 30 mph not sure ( no speedo) whats wrong with it?
yeah chances are it probably will need decarbonizing of the cylinder major, same with exhaust, some carb work, and some new piston rings maybe even a new piston.
try and get a new speedo on ebay, they're not too expensive
oh it was also backfiring a little every so often. it takes off stays goin slow boggin for a few seconds then starts to get faster. hardly goes up hills