Has anyone experienced a brake drum working loose and snagging on the shoes resulting in the need to replace the whole rear brake drum assembly? What is more remarkable is that the car has only done 7k km! I was advised by the Morgan agent here in Australia that these brake units are now, according to Morgan Cars, obsolete. Apparently there is a replacement system that Morgan have recommended that can be used but you can't buy one due to balancing issues. You have to buy the pair - roughly GGP 2000 for parts alone! Not happy. Can anyone shed light on this?