So as I was giving my new track plan a shake down and I ran into 2 issue with Lionel's Fastrack switches. These are the latest switches released, not the previous version.
Issue one, was when I tried to change the side the switch machine was on, it would lock up the switch. No problems on the older switches just the new ones. Here is a video of the cause and the fix.
The second issue was that all my engines were derailing on 4 out of the 20 switches if I entered from the single end of the switch. I thought it was a geometry issue originally but discovered that was not the case. I found if I bent the tip of the moving part of the track just the slightest hair, it solved the issue.
Hope this helps anyone else buying the latest version of the Fastrack switches that runs into issues. Not sure if it affects all sizes but all mine were 072.