i just got back from my first ride no my newley rebuilt 70cc tomos. as some of u may know last summer i got a 70cc bore kit for my tomos... that didnt last very long. the crank literally blew to pieces. well actually the main bearing did. not a big suprise considering the engine was a 92 and had 23,000 miles on it. anyways it left a big scratch in the cylinder. the piston was real bad. so i bought a new piston. then i got a new crank. i bought all new bearings for it. new seals and fixed a heap wrong w/ the bike. it took me from last night to today to get it running and all tuned. it runs sooooo sweet and quiet. im used to a lot of engine noise, this thing is very quiet. and the engine doesnt leak for once. the only thing wrong now its a slightly leaky pet-cock and a back brake cable problem. after that the bike will be great. if anyone was thinking about getting a 70cc kit i warn you now... make sure you ether have a farely new engine that has no engine noise or replace the crankshaft and the bearings. trust me you will be glad you bought the kit. quarter throttle it goes about 25. when i had the kit on the other engine it would do about 52 on flats and it would get up there really quick. oh and the avanti people. your kit is crap!!! my kit included a cylinder/piston kit new head all gaskets a new amal carb and a new bi-trubo. all for 350. and the kit adds heaps of power. well happy mopeding all.