this is the one I have ,works good, doesn't crunch the down tubes, is easily adjustable, loose for around the garage and tight for fast stuff. My bike while decelerating to a stop will head shake slightly with my hands off , I don't like that, and the damper eliminates it. ( Trying to fix it you could spend countless hours and money turning it into a science project and maybe never accomplish anything . Or concede defeat and a install the damper, of course everything should be properly adjusted, etc, the damper should not be used for a giant Band-Aid)
https://andover-norton.co.uk/en/shop-details/16299