i usually washing machin the material when the metal is out and i have boxes of broken up recaros from back in teh day so select a set of good foams
did you have to weld teh frames? i find there ar every few i dont weld up,they split in alsorts of places and you can tell if you try to 'flap' the bosters like wings
i often weld them up kinda like seam welding everywhere and they are like a different seat once its done, just so solid