I repaired my seats also. Here is what they looked like before:
and here is what they looked like after:
I made new wires from 0.125″ diameter 308 stainless welding rod that I heated and bent. The springs I purchased from a spring vendor here in the States. The springs were 4″ long and 0.5″ in diameter. They were $3.13 each but Century has a $40 minimum order. http://www.centuryspring.com/