Did you get your stock bushing removed?
I was able to remove mine, shot of pb blaster 7/16 1/4" socket and 3/8" 6" extension. Had to use a 2x4 on the concrete floor and a 20oz hammer, and I had to use more force than you would have thought.
The bushing is in after freezing it and a good blow from a hard rubber hammer. The barrel doesn't fit in the bushing, to tight. I am going to remove a little material around the bushing and polish the barrel. This is for my ts40, had no issues with the sp01s.