Naima, that's way too many ridge shaped young mountain ranges inland for tectonics to explain... can you do localized erotion in FT or Wilbur and bring them down a great deal?

Also, I never got round to explain to you what I meant by assymmetrical oceanic crust... here's a drawing explaining my point in one of your seas - actually, it's the major "implausibility" I find in your map.
detail_innersea.gif

The way I see it, the best solution is to have both rifts still active, as they do not coincide exactly... it would need a little of messing about with direction of boundaries and land shapes in that area. That is, of course, if you want to be bothered about this scientific accuracy thing.