Jonathan
As you have found the "newer dealers" sometimes lack that deep understanding that Morgans need. However just north of you is Mike Duncan at Hartlebury , now only a service agent, what he doesn't know about Morgans is not worth knowing , I would use him for service and sorting issues.
I went to school in Worcester (a few moons ago mind!) but didn't own a Morgan until I moved away in the late 60s.
