Ok, I have a 1998 shee with T5 pipes and a Pro Flow air intake plate with Pro Design foam air filter (air box lid removed, and re-jetted). I've owned my bike for over 6 years now, it was used but bone stock when I bought it. I did a compression test today and both cylinders are reading 120 PSI (never had a top end rebuild). I ride dunes only and I am wondering what I could do to get some more power before I do a top end rebuild. I don't want to do reeds, cool head, or porting until I do the top end, so I'm wondering if advancing the timing now would help, or if anything else would be a good idea right now.