recharge problems pumpmag

[cougar20th]

my pumpmag is having recharge problems gas wont enter the valve assembly with all the pump stuff on. but with it set to work as a semi everything works fine. i recently put all new seals in the valve. also if i swap to the other valve assembly it does the same thing. its a new sear

ideas?

[cougar20th]

well as sudden as the problem appeared its gone. i did nothing. only differance was i had been using co2 for testing and now i refilled my n2 tank. my guess is the co2 was the problem