On my '06 YZ250F I changed out the stock 5wt oil for 2.5 for riding trails and it was a much better improvement. I now have a '08 YZ250 smoker with the same fork, but I'm not sure how different the valving or spring rates are from the 250F. Its a little stiff/over damped for trails unless I'm hitting things pretty hard and fast. I'm just looking for some tips from people with experience working on this fork. Will I achieve the same results changing oil to 2.5wt as I did with my 250F? And, should I leave my oil height the same or take some out? FWIW, I am a fast Vet B/mid Vet A off road racer, and I'm about 175lb nekkid. The rear suspension is bone stock but the low and high speed is backed off a little and feels wonderful. Wouldn't change it. The front feels a little too stiff compared to it. Thanks!