A/c blows cold, but the compressor clutch will not cycle off. I've searched and some have mentioned a cycling pressure switch and maybe it needs to be adjusted, but I can't find instructions or other info on how to. Any ideas? I only have a low side gauge at the moment, but it's showing 38 psi dynamic pressure and obviously as the clutch will engage, its not low on pressure and the low side switch is working. High side issue or?