Hi, I've just got my Agility RS 50 back from the bike shop and is running, finally. Now I'm looking to up the power a bit. I've changed the drive boss to a non-shouldered type and am looking to improve the scooter without ruining it. Can anyone advise which components work best with each other - cdi, carb, piston kit, exhaust, rollers etc' And what to change and what to leave alone so the scooter remains reliable. If anyone out there has a good, running example I could copy what they've done I'd really appreciate it. Thanks