
As well as new webbing I purchased replacement foam pads which were a direct replacement at around 2" thick. I wasn't happy with the seat base though, it appeared to have quite a bit of slack and was rippled at the edge, no matter how tight it was fitted to the frame.
So today I dismantled the seat bases again and fitted an extra layer of 1" foam, bringing the total thickness of foam to 3". I am pleased with the end result now. What I am wondering is, is it normal to have to fit more foam or could it be that my seat covers have stretched due to the old webbing snapping.
Here is the before and after photo-
