Yesterday I took another look at the switches I've been working on. I think I solved my problem for the most part. I won't know if the fix is 100% effective until I get everything assembled on the layout but it looks good in the tests. My fix was to add a short piece of center rail just past the outer turn-out rail. It only added about a 1/2" to the rail but it seems to have made a big difference. I tried several different locos and most ran through without stalling. If more center rail is needed I can add some copper sheet to the top of the plastic piece inside the turnout rails. I just have to watch that the roller isn't on both the center and outer rail at the same time.
