I have a question for you guys. I purchased an 06 450 last December and noticed that when going through large whoops that the fork makes a thunk or clunk sound when rebounding. Have check steering head and internals, everything seems to be ok. Is this just the fork rebounding hard? Last forks I have experience with were on an 02 YZ250 (smoker) and they never made a noise like this. I know these are a bit different but am wondering if I should be concerned.