A couple points.
Supplying track power to the terminal marked "track jumper" (on the back of the track switch) will supply that power to the center rail. Thus there is no need to solder an additional wire to the center rail.
If you have power through the first switch but not the second you have a no-contact issue with the center rail pins. Fastrack switches are known for this and the simple fix is to bend each center rail pin (sideways) a bit to insure a friction fit against the next track pin. Lionel came up with this recommendation several years ago. Additionally, I put a SLIGHT crimp in the hollow outside rails at the end of each track piece so that the track pin from the connecting track piece has a friction fit.