So now both of my 550's are having problems. First one- high and low side valves leak by, and it doesn't see the temp clamps any more. Second one- The screen is out, and the hook is broken. I have sent them to testo before for repairs under warranty and the turnaround was fairly quick and I didn't have to pay a dime. This will be the first time sending them in w/o a warranty. I don't know what to expect as far as repair quotes. I assume its probably going to be pricey. I think if the quote is more than a couple hundred bucks I'm gonna cut my losses and order some digicools. Does anyone here have experience with getting repairs on a set of 550's out of warranty? I can't justify spending $300-$400 on repairing manifolds that I know will have problems again.