Well sort of good news,
I managed to fix the pop bumper enough to keep the game playing till I can find a replacement.
Managed to make enough thread to get a nut on the base of the rod, pictured.
Then changed the ring and rod to the lower pop bumper witch doesn't get as much action as the top to next to the rollovers.
Tested it and its good as new, not sure how long it will last but enough time for me to find a replacement or maybe make a replacement.
SWINKS
" I am wondering if an adaptor ring can be made from a regular one to create the the one you are needing happy to help you out create a fix - seems like an interesting challenge can you post some more pictures of the ring and assembled unit in a game and / or send me a pm with images etc"
Thank you for the help Swinks, If it fails again I will get back to you and see if we can make one up, much appreciated.
Pinpal...