Question for FAMING & KENNY CORPORATION

I have 4spotlights with electronic transformers which attach to a rail on the ceiling. The attachment fitting which is plastic on metal has cracked in 2 of the light fittings, making them unsafe and impossible to attach to the rail. Is it possible to replace this part as I really like the spots?
They have your company name Faming & Kenny on the casing of the transformer box. Patent no ********
They were put in quite a long time ago during the 1990s
If you could let me know where I could find these in Ireland or London I would be very much obliged.
Thank you.