Marui Hicapa on CO2
 

Has anyone tried to run CO2 through the marui Hicapa's

I have a "marui" hicapa, and by that I mean the midframe, the leaf spring, are still original Marui. Everything else is some aftermarket upgrade part.

I acquired a CO2 KJW mag and The gun seems to want to shoot 2-3 round bursts with CO2. I am using a upgraded hammer spring which is much stronger than the factory KJW/WE hammer spring.

Is the failure due to the difference in the release valve on the magazine or should i continue looking for a solution to the burst fire on the midframe/springs/hammer?