Ace 1 Arms Agency arms skeleton slide G17

[JR0210]

Hi, I just received this slide the other day and I have no idea of how the BBU goes together and cycles the loader? I've gotten it to a workable stage but it only fires a BB on the first shot and doesn't cycle after that. I've also noticed that the stock TM BBU doesn't fit in the slide and catches on the lower frame if I attempt to use it so I can't even get it on. Thanks for any help.