well crap!! hate to hear this. I gotta tell ya guys, I LOVE the hydroboost system on my 84 gn. I wish I had it on my 86 and 87. When I pull up to the line, I can barely push the brakes, then start the spool up and I can feel, through the whole front end,...the pistons in those front calipers grab and clamp down on those front rotors, knowing that those front wheels ain't gonna move till I let off that pedal, no matter what. and I know theres the "if you get a leak it all pumps out thing", but, wouldn't good preventive maintance help your chances of longevity? At least thats how I'm looking at it. Last fall I changed out the fluid, changed hoses, and the 2 hard lines (still available at advance auto parts) and all the o-rings. Would anybody recomend any other good pm to do to the system?