A thicker wedge won't get past the escutcheons.
Unless the capture pin adds some friction to the wedge I'm afraid it'll just slide to the stop, I mean, it's loosey goosey.
I don't want to mess with the barrel lug as it'll need to be sweated off and a new one found and brazened on. This kit isn't really high end enough to warrant so much extra work.
Or I may add a shim to the lug's interior instead of bending it in the middle. That may be the easiest of all.
The pictures are appreciated as I wasn't sure how they actually were suppose to look or function, it's plain now. The plans I have show the captured pins with a cut in the stock in the form of a "t". The plans are suppose to be based on the real deal, but who knows.
A question regarding the slot in the wedge for the capture pin, does it narrow towards the head of the wedge or is the width of the slot consistent for it's full length? That might provide the friction I figure is needed,