So I'm sitting in front of this thing and we have had nuisance LP lockouts. They started last fall and have occurred in both heating and cooling. Current superheat is 8.8 and sub-cool is 31.1. EWT is about 65F and EAT is about 73F. Suction pressure 126 and liquid is 262 both around chart specs. Chart indicates superheat mid teens while sub cool should be as well. This thing worked fine with the charge in it for years (I'm the only servicer as it is my excavator's home) so the conclusion of overcharge is unlikely (in spite of a high sub-cool and low superheat). Really not much to conclude except bad metering (TXV). Any other thoughts?