I can review the 30 day transit tag here in Florida and update you. I guess first things first would be toget the VIN# and look over a CARFAX. The cylinder that leaks could be replaced but I would either replace those two that control the tonneau lid. I would negotiate the purchase price to include the replacement of all cylinders. The lady that owns it actually bought it for her husband and she is savvy about the car, values and as honest as the day is long. My involvement was to suss out the issue. As for replacing all the cylinders, I wouldn’t mind helping on that for the education. Let me try and dig a little more and I’ll reply via PM.