[B Humberstone]

Richard I had already seen the post you attached and was planning on fabricating some external slide stops. As my slide topper extends past the edge of the slide I’m going to fabricate the stops to be hidden behind its valances. 
As far as the mess that used to be slide lock mount yes cutting it off and reattaching is my plan. Once I get that mounting plate removed I’ll be able to assess how bad the square tubing is damaged. Currently I can tell it is bowed out on the middle and there is a smallish rip at the bottom were the weld held but the square tubing didn’t. 
Newells design for the extend works fine right up until it bent enough to get under the lock pin unit, then the carnage began.