Got a proper 50 zx pipe on my aerox now instead of that 100 :/ and now its running well its up and down revvs got a mallossi variator on my bike and 3.5 rollers it starts off fine revvs normal revs go up then really high with no power behind them but then the revvs level off And it will rev on off at similar revs the piston was quite scored when i looked at it but the rings seemed fine or should i change them
