I’ve ‘aquired’ a set of what I believe are 750 J/K or L forks. I’ve freed off all the pre-load and compression adjusters, but the rebound adj. on the top fork nut is solid! By the state it’s in, it’s been that way for a while. It’s mullered, and I might be wrong, but it looks as if it brass. The slot’s just about had it, so I don’t want to put an excessive amount of weight on it. Any ideas how to get it moving, or out altogether?