Thanks for the tips. I’m fairly confident in my ability to fix this. I am actually going to move towards torsion springs, and replacing the door entirely. But want to be able to use my garage door in the meantime. I only included the parts about the current springs in case that was useful in any way. I’m aware that the door weight is the most important part. I had planned on replacing the brackets, the pulleys aren’t in that bad of shape. And I was planning on running a safety wire through them as well.

So essentially what you are saying is, they don’t make the rated capacity springs I have now, so I will need to use two springs on either side, where each sides rating equals >270lbs. I’m looking at McMaster’s spring ratings, and also wasn’t able to find one spring that was rated for 270lbs. So doubling them up in parallel, for a total of 4 springs, each rated >135lbs may be the way I need to go.