Dont know if this will help but back in the 80's there was a stabilizer made of 1" pvc about 6" long with a cap on each end. one end had the threaded rod attached to screw into the riser.if iremember right, hydrolic fluid inside and a piston and spring arranged somehow to reduce shock. some of the club members were making there own. cant remember what company made it but it was painted a single color and had a leaf stenciled on it. anyone remember it?
Dan