I'd have to agree with John, at least for a few of them. I saw 4 spots with a gap (red boxes below).
These are just some thoughts, I did not go playing with RRT to figure out if my suggestions will make this close cleanly with absolutely perfect geometry . 
The topmost one I'd guess maybe there could be an improvement with some of the smallest fitter sections used equivalently in the 2 areas where I put the purple stars. No other part of the track would be affected by pushing that a little to the left to help the alignment at the switch. Even if you allow for that spur to move a bit and become non-parallel to the main loop, it's not a lot of pieces to allow for fudging it.... not really much play there (if I counted right only 2 straights (one being shorter than a 10" piece) and the switch in between the 2 opposite sides of the loop).
The furthest left one (purple arrow) might be able to just force it with little issue. Since there are no other switches until all the way around the loop near the bottom right, there is probably enough play there to fake it.
The bottom most disconnect looks like maybe it could be helped with a short fitter piece added in the area near the green arrow. Or at least make it closer so it might be less stress if you do force it.
The one with the orange arrow looks tight, even though it's only a small offset. With only 2 straights and one curve between the 2 switches, it might be rough. I'm not sure where to try to add a fitter to help that without affecting a lot of other alignment. Maybe a small piece in the area near the light blue arrow if it may actually also help with the lower right misalignment (though it looks like moving in that direction could make the disconnect at the switch worse instead of better). Might have to shorten those two spurs near the curve also, even if it does help.
{edit: good catch by RickO on the track type. I don't think that conceptually changes my thoughts above, with the possible exception that I don't know if RealTrax has the same small fitters available that FasTrack does}
-Dave
