What is AIS? I just started reading about the wr. I'm picking up an o3 wr 450 next week and need to get-r-tweaked. Any suggestions? It has a fmf pipe. I'm 46 and 5'7" so I think I'll need to shave some foam off the seat. Any companies making comfy short seats? Any other tricks to shrink height? Where are best websites to buy stuff for the wr?