I am finally getting around to fixing this. I got new cables and also got a set of safety cables so if it breaks again, no one gets hurt. However, I am wondering if I should use some of that angle steel rather than 2x4's this time. It's made for that purpose. But it's not the thickest steel, and while it might work for a one foot or less drop, will it support a 2 foot drop without buckling? On the other hand, I could use some thick angle iron for the main support and just use that thinner garage door steel for the braces.
I know I can make something work, but was wondering if anyone else had used that angle stock made for garage doors and if it was strong enough for my needs.