Fusion Firearms XF PRO! Lighter Recoil Assembly w/ Non Ported Barrel? Is it reliable?

So the lighter recoil assembly doesn't run perfectly with the non ported barrel. I experienced two malfunctions since running it in that configuration and didn't have that issue with the heavier recoil assembly. I had some people ask me so here is the results of my testing. Otherwise this gun shoots very well and I'm impressed with it so far.