I need pole parts for a Purple Arched Sierra designs tent.

Picked it up in a thrift store for $10, but somebody did something really wierd with the poles. The bungie cord assembly has been used to make a rediculous 24 fooot long pole, and the other pole parts have no bungies or pokie things at all. The tent floor is rectangular, there is a big Sierra designs logo at the bottom of the arched door. Entry is through either end under the arch. There are two 1/4 inch dianmeter poles which unfold out to the length of the tent each, and then a ton of 1/2 " poles which I presume make up the arches. The tent floor is about six by 8. Any idea what the name of this tent is ? Any idea about contacting Sierra Designs for parts ? I can't find them and I used to work for them down on fourth street in the 60's !

thanks,

Doug Keachie

PS, the rainfly is also purple, as is the floor. There is white screening in the roof, and screen double doors.