Hello, I just bought a basket case bike, and was wanting to know if anyone had built one of these old thumpers and had some tips or tricks to share. I have already got a new wiseco piston/rings, supertrapp exhaust, and all new gaskets and oil seals. Since the head is already off, I wanted to port and polish it, but have never done this kind of job, so I'm hoping someone could drop some knowledge on me. Also, do these bikes have any problems I could address during assembly? Any input you guys have would help.