alright, i bought a really good condition 1996 yz 125. It doesnt seem to have the powerband low enough. I am really into jumping logs, hillclimbing, rock climbs, you know all that good stuff/. But the problem is in order to be in the powerband i am usually going like 10 mph in first gear, what can i do to change this. It has a 49 tooth in the back, not sure whats in the front, has to be a 13 or 14, i hope to god its not a 14, but this thing needs some serious change. Is porting a gtood idea? how much, how long?