Geez, 103 out in Lake Wales? I guess I can't complain being closer to the coast. We go out there to the Circle F camp every year, when it cooler.
Anyway, What do you mean by the compressor clutch free wheeling? The low pressure switch has not disengaged the clutch. When the A/C is turned on the fan stays on. The cab is pretty tight, so that shouldn't be the problem. I will take it to a tech next week and see if it is full enough. I sure hope that is the situation.

It's good to hear that your Old Air system is super cool. Enjoy that hot weather out there in Lake Wales.