In fairness to all, we don't discuss pricing on the Wall. Thanks for your cooperation.
I installed new Goodman condenser matched to an existing year old mortex coil. Removed old unit cleaned line set with dry nitrogen. Installed new unit with new LL dryer. After all connections were made did triple evac as always to make sure lines were free of all contaminants. Old Compressor was shorted to ground but no acid in refrigerant. On startup (r22) head pressure climbed to 400+ very quickly and suddenly dropped and unit performed perfectly. All this happened within 2-3 minutes. Ran unit an hour starting and stopping it with t-stat. Switched over to cooling mode numbers right on with chart. Anybody seen this or have a clue what caused high head pressure?