So a few weeks back I replaced my compressor with a new unit and had the system evacuated and charged at a shop. Fast forward to actually needing to use it and it barely cools at all. I had a can of A/C Pro and hooked it up to check the pressure and the pressure is reading high on the low pressure side. I've checked to make sure the clutch engages, and when it does the pressure drops slightly. I also replaced the drier/receiver as well as the expansion valve. The only thing I can think of is either the compressor control fuse is blown or the plug doesn't connect solidly. Has anybody else had this problem before? Thanks.