I recently bought a keeway rx8 as defective, thought to myself bargain. When I had in the garage I tried to get running after carburettor clean and many kicks it was on, but during the test drive was a really bad trigger and vmax about 30 km/h. Then I ordered a new cylinder 70 ccm from malossi and yes that is illegal I know. When removing old cylinder I immediately noticed that the already had a 70ccm but I thought the would be kap utt and so I then installed new ones with new open ace and 21 mm carburettor with 90 hd. When it was all about it, I kicked a few times and that was on I had to run for a while so in the standgas, after about 5-6 min I made a test drive ! And the result is the runs just as bad as before no improvement nothing ! On what can this lie ?