I have an 06 crf250r and I think its about time I checked the valves. Ive had 2 strokes all my life and I did all the maintanence myself. But this is my first 4t and I dont know how to check/adjust the valves. I am mechanically inclined and can do the work, just dont know what Im doing. If I follow the manual will I be fine? Are there other instuctionals, videos, etc I can see? What tools do I need to adjust them? Any thoughts let me know.