Its worth trying one of the kits on ebay (about £25)
There are a few videos on youtube showing the process…..and some funny ones.
I emailed a company months ago about my drivers seat. I have a hole in the Love-handle-support-bolster
and the lower bolster near my right thigh has lost its shape and flattened.
Co incidentally they got back to me the other day saying
"Carlo I can fix the hole and colour it and bump up your base seat.
Cost would be £120 if you bring it here Broughton DN20 but it would be in the new year now,
Thanks
Jackie."Im gonna get it done when I get back from Italy in the New Year.