MGB Seat Diaphragm

[ninab@scoresheet.com (Nina Barton)]

Since I can't afford new upholstery right now and am tired of sitting on
the floor of my MGBGT, I decided to try and replace just the seat diaphragm
(the black rubber model).  Anyone have any good ideas on how to stretch the
rubber to fit (thought about heating, but have several of the hooks
attached already and don't want to put the whole seat in the oven), or ways
to make the rubber more pliable?  Or do I simply need to clone myself to
get the job done?  Thanks in advance.   Nina