I have been in this predicimant for a while now and still don't know what to do. Here is the problem/situation. I have an 02 YZ125 and I started racing last year. It has a HORRIBLE head shake which is slowing me down a lot. I only weigh 105 w/o gear so I think that is my issue. When my rider sag is at 100, my free sag (i think i have the terms correct) is way off. Which means my springs are too stiff. Currently, I have all of the parts to replace the springs only on my bike as well as stuff like oil, seal/bushing kit, etc. My question is should I send my stuff to FC to have them revalve. Could they use my parts (springs, oil, bushings, seals, etc)? Do you guys think my problem would be fixed if I just install the parts I have now or should I have FC do a revalve. I hope you guys can see my delema here. I just sold my snowmobile and am getting out of riding for now so I have some extra money to spend. ($800 ish). Another thing I have considered is selling my 02 and getting alot newer 125 instead and just running it stock. But that's a totally different post.....LOL. My 02 has basically a new motor and is mint and i love it other then the handeling part of it. Let me know you opinions!