Re: Lessons learned on a 66cc Chinese Lady!
If you don't understand porting, DO NOT go after your engine with a dremel.
Do your research first or you risk a ruined or crappy running engine.
That being said, if you are careful and read up first, porting a chinagirl is easy. You can expect better power when porting is done properly.
If more is better, then too much is just enough.
If you can't afford it, build it yourself.