Great info here! I am learning so much about this bike I bought! Question:1) Why is my seat height so low? It should be 39.2" (for the 05) but my o4 WR450 measures to just 36" at the low curve of the seat. Is there that much adjustment in the rear spring? 2) I did not get an owners manual/service manual with the bike. Is there an on-line source for oil-change procedures etc? Thanks!