HELP! Road Runner in prison, or any garage door repair guys out there?

Hello All:
Two weeks back I was pulling out my Mustang (I know) and as I closed the garage door it came crashing down. YEP, broken spring.
Really long painful story that I will keep short is I live in a town controlled by a garage repair mafia. Regardless of who I call, they all get their parts from the same shop. This shop has more than enough business it can handle, and since it has monopolized the garage spring business in Tucson they are in no hurry to help the customer, contractor, or repair guy. I've been without garage access for two weeks and it really hurts that I cannot get my Road Runner, or Grand Marquis out.
Details are commercial 18x9 garage door, two springs, and both broken. I've called 8 repair shops, 3 came out and won't touch it, and I'm trying to get the local mafia guys to handle the repairs. It seems they are just stringing me along.
Got to fix this on my own, and I realize it is dangerous. I was a volunteer fireman many years ago and made a fatal call for a garage door spring replacement gone bad.
I measured the wire diameter at 0.295, inner diameter at 3 3/4, and length at 34.75. I need both left and right wound.
So I am looking for advice as I tackle this; found Northshore web site that seems to be the best DIY place. Looking at the door is seems so simple, but yet I know it is complex.
Thanks for any advice, or sympathy.