TM Hicappa Slide Hang

[sgtscarfy]

TM Hicappa
Airsoft Surgeon Kimber Slide
Shooters Design Steel Chamber and Barrel
Shooters Design Steel Guide Rod

First off the gun fires fine and cycles properly when firing. However when I rack it to the end of the slide travel, 30-40% of the time it hangs. The slide hangs up on something and it get pretty stuck. It takes a quick tap on the back of the slide to break free. Ive had some experience with working with TM 1911 frames and Hi-Cappa's but this baffles me.

Any ideas?

Edit: I figured it out, the inner barrel/Hopup housing was rubbing on the spring guide insert(in the slide)...