[MDPotter]

Good for you for taking matters into your own hands. My dad was having similar struggles with his Vintage Air system. He decided to buy the equipment and do his own charging and discharging and troubleshoot with Vintage Air instead of keep paying a local shop. Now it works great.

If you don't already have the laser pulley alignment tool, get one. My dad had the same squeal issue and it ended up being the power steering pulley that we didn't press on far enough and thus was causing a belt squeal. Of course, this was after getting the updated Kwik bracket a year or so ago.