While awaiting time and money to have a trunnion made to fit a fox shock, I decided to fit a nos RS super deluxe to replace the less adjustable coupe deluxe shock (nothing wrong with it, just could). Since doing this, the rear end creaks when compressed, so wondering why? Shock is nos, as are bushings and spacers, the only difference I can see is that the new shock has o-rings between the bushing/spacer arrangement. Would this be the cause of the creak and should I just remove them?