Quote Originally Posted by desA View Post
Has a set of charge-determination trials been done Aaron?

The charge will affect your system dramatically.

I'd suggest taking your current setup, beginning with a minimal charge, run the system. Record the results, add in additional charge (say 2.5-5%) test again. Continue the tests, recording as many parameters as you can. Plot the results & see if the system sweetens at some point.
If we are to believe the SC and SH measurements, then we are already flooding the compressor. Adding charge would make this worse. Removing charge would give the compressor a break, but would eliminate what little SC we have.