I took the screens off my 2550 to clean off the radiator, and discovered an oily crud packed mess. The hyd bleed leak off line was missing, and apparently had been for a long time. My question is where does it re-enter the hyd oil reservoir. I found a small piece of plastic tube laying in front of the radiator, and another small piece of the same back on top of the clutch area apparently entering the front bottom of the steering column. Does anyone know what I have to do to get a new piece of tubing into the hyd oil reservoir. The other tube to the bottom of the hyd pump was apparently replaced at one time and is fine. The other alternative is to run a new tube out the bottom of the engine compartment, and let it drip. I believe the oil loss would be negligible and as long as I periodically check the level, it would be OK. I'm losing what ever vents now, but it's being misted over the radiator by the suction of the fan.