On a reciprocating compressor with unloaders (such as a Carrier 5H60) using a direct expansion (TXV) would one have to have the compressor completely loaded (all 6 pistons active) to set the superheat or could it be set at any given compressor stage as long as the system load isn't fluctuating. My thoughts are, all stages of loading have to be active... and then as the compressor unloads the TXV will adjust accordingly. Thanks ..