I got the delrin slides installed and drilled for rivets today. I will call it "done" for now, knowing that I want to put aluminum on each side of the delrin. But, That will be easy to template off of the delrin and there is no need to do that right now - I will do it before I do my next primer session and get them in there too. I ended up having to take out more aluminum than I planned on in the bulkheads, but I am really happy with the way the rear seat throttle came out. It is free sliding and works just like I want it to.