Chassis is the main problem
I would say that are quite a few out there with cracks that no one has noticed. Mine cracked at the upper wishbone mounting nearest the gearbox if that makes sense.
i have been to two 3W get togethers and at the first one i found two other 2012 3 W's cracked at the same place. I recently wen to the Blenheim meet and found another 2012 in the same condition.
If the car has no welded bracing between the engine mounts and just has a bolt on brace it will break at some point 4000 miles is about the time they go.
Run you hand all around the chassis tube araound the wishbone mounting points.
Ring Morgan and ask if they will repair or replace a cracked chassis at any age becuse these early chassis will all fail at some point. I have seen too many failures at too few meetings for these failures to be one offs.
I would change to a centa compensator. Makes a huge difference to the feel of the old girl but I do get a rattling of rubber at 2800 rpm.
If you buy a 3w with your eyes open and are happy to finish the car that Morgan were brave enough to start building you will love it.