You can find a lot of information about GEM products on either the Italian GEM website:

or the US distributor website:

I am still playing my Genesys XP module and GEM PRP800 piano. I bought them years after GEM Company had closed. In addition, I was able to buy accessories from the US distributor even after that. The US distributor (Artie) was quite responsive to my requests. I think that you could contact him if you have any question about services, parts, or accessories.