Apeks does not make spg, probably originated from Italy.new SPGs tend to leak in the first 10 dives; closing the tank and purging the 2nd stage does not remove all gas from the system so you have to suck the gas off the 2nd stage to remove the pressure to be able to unscrew the 1st stage from the tank; lame flat o-rings take a moment to seal when opening the tank; etc.
I suspect the lever(2nd stage) was not set up properly(too low).
I actually prefer the Apeks O-rings(EPDM) than those from Trident(nitrile).