kjw hi-capa slide problems
 

ok! My kjw hi-capa problems again!

Im using propane on it as recommended.

I dont know what happen, i wus just using it at home, i havent used it in a game yet.

Anyways! When slide is used by, cocking, or firing or using the slide release, It seems to displace itself, and gets stuck requiring to be tapped(by hand) to get back to place. I can fire around 20 rounds off it before it get stuck and releases all the gas in the mag and gets stuck.
I can use some suggestions on how to fix this, or where the problem might be, Lets start with the cheapest easiest way... I know that i can probobly solve this by just buying a new slide but, its a new gun... its only 2 months old...

Heres the normal and abnormal pics:

The one on the left is when the slide locks up and the right is what its supposed to look like.

That's the problem with KJW, they don't have the greatest quality control on their guns. It could be many things, but it's probably either the barrel-slide contact in the chamber or something to do with the blowback unit and hammer.