perma ease
Since the springs get weak after years.....after your clean up you want a product called perma eze. it is bird cage type stuff sold my length. Not high priced...maybe $9 yrd in 23 inch width. After the perma eze...then burlap.. then your foam or cotton cushion. Nat'l Fabric in...
I utilize a company called $50 for any amount of refills that I just purchase the gas. I think the charge is for valve inspection on the bottle. I wish that done.