Guys its been ages, I kind of gave up biking after my mate died, but have now decided to start again, I have a thundercat, it wasnt starting, so took it to the mechanic, he fixed it, said there was water in my floats, or something about water being trapped and so my bike wasn't starting, anyway he said it could be dangerous if the water got into my engine, etc etc, so I start the bike up and it sounds completely messed, it had a really steady vroooooomm, but now its more like a tractor on steroids, anyhow my mechanic acted as if it was normal, ( he isn't official, just has this as a part time thing he does from home) as I drove it home, it seemed okay-ish, I couldnt tell if there was a lack of power. But it sounds really weird, nd I can't get my phone to pick up the noise or I would have put it up, just freaked out that I ain't done any valve damage?? Help!!