What is the reasoning for the increments in track sizes. i do a lot of cutting in the 120" range and i have to put 2 tracks together to make the cut. I know there is a 16' track, but i do not want to spend 600.00 for something i only need 126" of. i have the 42", 55" and the 75' track and i have to keep the 75 and 55" together most of the time to so the long cuts and then take apart to make cross cuts in the 48" range. if there was a track in the 130" range it would be perfect.