experiencing wiper issues........... heater hoses from the back of the engine to the control valve has sprung a small leak. I see lots of swearing and bloody knuckles in my immediate future. QUOTE]
Sounds like the metal sleeve bushings in the wiper assembly joints have siezed. Easier to replace it with one from a newer model than to R&R them ( which is possible)
Heater hoses at the control valve is a bit of a pain too as it is near the firewall with little space to work in. Just make sure you are not wearing a belt when you do this as you will be leaning into the middle of the car and the belt can scratch your fender.
Let the swearing begin.
E38 5.4L V12