I'm right in the middle of going through my dad's 1985 Suzuki DR 250. I wanted to check/adjust the valves before I put the motor back in the frame, but hit a snag. The engine is a SOHC design with tappets for each of the 4 valves. I found a clearance spec, but to get that clearance I had to back the adjusters WAAAAAAAAAAAAAAAAAY out from where they were, which doesn't seem right. I'm thinking that the valve sits below the top of the spring, and that's why I had to back the adjuster out so dang far to get the "proper" clearance. Does anyone have any suggestions???