You are where a lot of us are heading with automated processors. Sorry, but I don't have a good answer.
I have not seen the product in question. I have recently dumped a smallish durst roller processor gin good shape given to me before I ever actually used it, because it had foam rollers in the transport path.
There is a company in the US that services old Kreonite processors that may have spare parts for other machines as well, but be prepared to pay.
You may want to consider a DIY repair by purchasing the right sort of foam (I would look at McMaster Carr) and setting up a hot wire cutter and mini-pseudo lathe to form them to the size needed.
I have cut foam effectively in the past with a 6-10" long piece of nichrome wire extracted from a wire wound power resistor inserted into a plywood harp type thing to create a throat to pass the foam through and hold the wire taught.
I powered the 1 string 'harp' from a filament winding of an old tube amp transformer that was in turn powered by a variac to control the wire temperture. It worked well. The second time I lmade up this sort of rig I left out the filament transformer, but was sure to use rubber goves, as the wire was at a reduced line voltage potential that the variac supplied.