I haven’t had an issue with the Bushing, I replaced mine with the upgraded OEM part but from what I have heard it doesn’t sound like yours is a FULL BLOWN bushing issue where the bushing seizes on the crank causing you to NOT be able to disengage the clutch? I guess it could be boarderline starting to fail? If you are unsure, its an easy/cheap part and probably wouldn’t hurt just for peace of mind. Doesn’t sound like worn clutch where it slips either so I would check it out and replace it and the staked nut when you have it off. Then you can examine your clutch while its apart.
Full Throttle - it either solves the problem or ends the suspense