This can be done (I get home tomorrow) but a fair warning is that the ties constitute for at least half of the height of the model--meaning that the resulting product would either not match the tracks previous, or they would float (since they are missing the base ties).
I could do something like what I did for zig, which was to make the straights twice the height as normal (so they were just as tall in units as the stock models). Otherwise you'll be having to compensate for inconsistencies. Let me know what you think, and I'll get to work on these as soon as I can.