All Electroinc Mags -----> <----- ME

What would cause a xmag to work for 4-5 shots then just stop. Nothing.
If I reinsert the yellow pin and restart the gun I get another 4-5 shots.
Tryed a 2nd new battery and get the same thing.

Its getting air & both tanks are full. I tried 2, 1 outputting 850 the other 1100 Psi

And it worked fine when I got it back for Big E a couple months ago. Its just been in a drawer since.