Are you using o-ring to shorten the overall damper length to adjust the ride height? If you do so, will you need to compress the spring?? You should not need to do so according to my understanding on Tamiya car. If you do so, how could you have droop??? If you have droop on you car, your damper should extend when you hold your car in your hand. ???? Since you car has downstop, you don't need to worry about how long the damper will extend????
He said he has droop on his car. It is conflict! Very confusing! Basically a car has downstop does not need O-ring to control ride height. I doubt he has not put a screw in the suspension arm for droop adjustment. Very strange!