Hi my trusty KSC glock g26c can't finish a mag without blowign out all its gas, If I shoot like a few times, the slide doesn't go all the way back to normal, then it blows out all its gas en then the slide pops back to normal, I don't understand why... I have my gun wel lubed and , when I put my friends mag in my gun( he hasn't put a high flow valve in) my gun still does the same thing, this is really costing me precious gas. I really want to be able to use my gun normally ...