You can bet that Morgan pay a lot less/hr for warranty than you pay for service. No doubt it is much cheaper for Morgan to do a chassis at the factory as they have done a lot & it wont take as long as a dealer who may have done none. Why mine took 12 weeks is still a mystery. Hopefully you soon get the parts & can get back on the road. Are you changing to Centa compensator whilst in bits. I had one & paid only parts. They were also asked to check the clutch.
Tim