Lets try this agian, first reply got lost in computer neverland.

Pop the ballcup off at the end of the servo saver linkage. Now turn the wheels lock to lock, any binding? Put some pressure on the servo saver and operate the radio. Is the servo smooth?

Different servo saver buttons are available in a pars package from Losi that fit the splines of the 4 major servo types. Don't have the part number at hand but I think its a touring car part. The button just pops out of the bottom of the servo saver.

Ed M.