Hi Tip Top Man. Thanks for the info - 7000 miles is about average for a set of rubbers. If there is a hole in the bell housing behind and underneath the engine look for bits of broken black rubber to confirm the diagnosis but I think it is a certainty that the rollers are shredded. You do not need the whole Centa coupling just a set of rubber rollers from any Morgan dealer. This will help with engine removal = https://youtu.be/gkGU1_xVjF0

Good luck,
Phil

2013 M3W 1960 Velocette Venom and the Landrovardo!