Here's your tent---


Image from---
http://www.rockclimbing.com/Articles/Gea...Winter_957.html

Do you still have the pole hubs? If so you can figure out the diameters of the poles needed and get some pole lengths and some shock cord and with a hacksaw and a file make your own set of poles, using the aluminum hub. If you don't have the hub I'm sure this piece of hardwear is available somewhere. It looks like a common hub.

Otherwise here's an idea---You could dispense with the hub and make two poles for the top wedge and have one pole go to the left and one go to the right (extra weight of course) and use the usual clips. You'd need to put a double grommet on the bottom tab webbing. Confusing I know---I need a piece of paper to make sense.

Go to a machine shop and make a couple little hubs and then measure and cut your own poles. Very easy with a saw and a file.