That was my first off road bike,and it gave me loads of trouble,(just dont do what i did,drive it through a river :coocoo: What the hell was i thinking)
Anyway there a good bike,it was very relible,tunig wise,take the reed out and there is a white spacer that in them,take that out that will give some more bhp.
The air box take the cover off the top and put some blots to hold down the filter.
I cant remember what else i did but i have a web site all about tuning them ill find it and give it to you.