well, it acually had nothing to do with the carb. i messed with it for a while, took off the carb cleaned it again, made sure everything was in the right place, but nothing helped much. i noticed there was oil leaking from where the chain and all that stuff is, so i drained some out. now it goes about as fast as before. i didnt expect that to be it because i put the oil in at the same time i was cleaning the carb. go figure.
my moped gets up to 35 pretty easy but you have to go for a while with the throtle all the way open to get to 40mph. all i've got is a straight pipe, high flow air filter, bigger/lower resistance ignition wire(Taylor 10.4mm pro wire). and a split fire plug. i also run with racing oil and $4 a gallon high octane racing gas. the gas really does make quite a difference...i'm going to get it bored out soon too, my dad said he knows some one who can do it.