Quality POE is a better option IMO for conversions. Some of the DEC PAG oils claim to work with both refrigerants and still mix with Mineral oil.

Specs are listed. The supplier should be able to supply them.

Oil Type
PAG
Oil Qty (cc)
220cc

Are you sure you are using a "Cond" mounted office tube? They are different than stock.

The only reason I would think refrigerant needs reclaiming. Is it is "flammable". So more of a safety issue.

I think you need to mention Pittstop at least once more so we know you used Pitsstop!

Flushing and pressure testing are not the same procedure.

If you can get all the flushing agents, oil, and debris removed, I don't care what flushing method someone uses.

I still follow the procedure Hecat wrote a long time ago. Not the easiest or the cheapest.

http://www.hecat-inc.com/FLUSHING%20TEC ... 3-2015.pdf

You stated you already flushed the condenser, is that true?

Some just want you to tell them what they want to hear.

The last attempt to explain. Otherwise, it just gets repetitive.

Rear systems will normally be an expansion valve design and have a drier, for the rear unit.