Rebuilding a front bench seat

[LEE T]

Where did you buy the roll of heavier spring ? Thanks a lot for posting this thread.

I had this supplier saved on my computer, I don't remember for sure, but it may be the one I used---since I had it saved. At any rate they have what is needed at a reasonable price. They also have a forum for info.
http://www.upholster.com/upholstery-springs.html