James, sorry to hear your new knee is making driving a bit difficult. I had mine done last October and was waking up small mountains this summer and hope to be skiing this winter . Hope yours improves and you don’t have to sell the Morgan . Mine is the clutch leg and for years had a tender Achilles tendon so moved to auto cars which solved that issue. . The next Morgan will have to be auto.
Best MM
PS love the car colour and numberplate !