[Darklen]

I've used a softish bore brush to clear out the loose junk already, so there's really nothing to see. I've shon a laser pointer down the inside of the outer barrel and there's no bends worth noting. All I can think of that would be causing the problem now is more of this goop that came out with the inner barrel. I'm going to try progressively stronger solvents to clean it out until I can fit a new inner barrel in properly.