AEA AEA Element Max .58

I have the .58 version. When I fill the tank and take that first shot there seems to be an extra amount of air being dumped. I'm thinking a seal isn't acting properly . Since this rifle has nothing but seals/o-rings I wouldn't know where to start looking. Could anyone help me out? Thank you in advance
There is a Bin Tac thing on YouTube. Some of these rifles do this. I have the.50 cal.