I switched mine all over to standard NPT air fittings, using Merlin stuff from Harbor Freight, Viair braded hoses, and other misc stuff from Amazom. It all works fine and is cheap. And I can hook any of my shop tools up to the Lexus.What did y'all use for quick couplers on your air kits? I have never had problems with them before bu the ones on my arb compressor on the air chuck end are garbage. Probably going to upgrade those this week.