Thanks to all!
After posting many questions on the forum, flirting with using commercial refrigerant (and thankfully NOT damaging my system), I evacuated the system and checked for leaks. After finding none, I charged with r-12 (not cheap) and it is COLD now!!
I am finding though that when needed, the two aux fans DO NOT come on to cool off the system. What are the likely culprits of this predicament???