Service kit for old Beuchat VX10 first stage

[emoreira]

I was given an old Beuchat first stage VX-10 regulator with VS Octopus.
The first stage is in very good condition, but the HP seat is destroyed due to age.
The service kit for this first stage has the part number #16543

I've contacted Baja Diving & Watersports that used to have Beuchat gear and spares, but they no longer represent that brand and has no spares left. It also seems that there is no longer a Beuchart distributor in USA.

Any idea where can I buy that service kit in the US ?

Thanks.