Sagging Garage Door Temporary Fix

My garage door is 16' wide steel sectional for a two car garage. Well, these things wear out and they start to sag in the middle which causes issues with opening and closing.

It also causes the sheet metal to tear. 

First I added two pieces of 8' long, 3/4" wide, 1/8" thick, 90 degree angle pieces of aluminum that I bolted together. That helped.

That wasn't quite enough, so I added a section of 8', 1.5" wide, 1/8" thick, 90 degree aluminum.

Even better now. But this is just a temporary fix to hold the door over for a week until I get a new and better one.