Brake bias/balancer

Does anyone know for sure if the rubbers are available for this unit? I have been harping on here about a spongy pedal and when i looked at this today and pulled the rubber cap off i found brake fluid in it which means the small rubber is leaking. Sure enough upon removal and dimantling i have foun that this rubber (small one on right side of piston in first pic) is slightly loose on the piston shaft which is letting fluid by and giving me the poor pedal.
Ron from Superformance has told me that they have several calls a month for these but have never had their hands on a unit as a pattern.....if no one has these i might as well give this to Ron and he can send them to South Africa (i think) to have them copied/manufactured and make a lot of folk out there happy.
Any thoughts?
G P

Also does anyone have an exploded diagram of this or a photo of how it exactly goes together as maybe i had something wrong???
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Alberto, Dinoparts DE has them.