Im having a bit of an issue with my new MM252 where the LP side of the regulator wont hold gas pressure for more than 1min (actually about 30sec) after the bottle is shut.

I dont think this is normal because my old 130xp would hold gas pressure between the reg and the welder for days, literally!

Pressure is holding fine between the regulator and the bottle.

Checked all external connections for leaks with soapy water, and have none.

Im thinking I may swap in my old regulator that holds pressure and see what happens. I dont imagine the solenoid inside is leaking?

Video of the leakdown: