I started the BX & hydraulic oil dropped from somewhere under the rear fender assy. Obviously something has failed but with all that bodywork sitting over the back end, I can't see a thing other than oil on the floor. Other than get someone else to do it, has anyone got some advice, not just about removing the fender but what are the most common causes or failures of seals in what sits beneath the fender? Google search it & I'm likely to end up on a website devoted to elephant seals, sea lions or another species.