Need help with a WA 1911 please

[Brakoo]

As stated in the title I have a problem with my 1911. It's one of the older model from Westerm Arms which is in their first generation of guns.

Anyway the problem goes like this, I will rack the slide fire off my first shot and then the gun won't fire again. If I take out the mag I notice that a round is in fact chambered so I let this round out put the mag back in and rack the slide again, now it will fire and then same thing.

I tried going back to the stock recoil spring and it didn't help me with anything. I cleaned the whole barrel assembly aswell but still no luck.

Any help here wouold be appreciated, thanks in advance fellow airsofters.