pneumag problems

[dyeforever]

i got my pneumag running good now, but if i leave my gun sitting for a while it wont shoot. i gotta pull the trigger a bunch of times then it will shoot again. my trigger set really short. not being able to push the msv2 all the way back cause this problem? heres my setup.

y-grip
msv-2
mpa-3
no qev
micro rock reg

thanks