Sorry cannot help with your BMW dilemers.
But just thought I would share with you on the MG Midget scene.
I have just bought myself (2) one roadworthy and one box of bits as a project, something for the winter and one I can use to help me get out and about a bit more.
I have been so busy this year I have not been able to get out on any runs at all.

How are you getting on with your one, what spec is it???????????
Do you have any problems with yours that I should look out for?
Mine are 77 reg box of bits but very reasonable body and chassis came with lots of parts
The other 76 reg On the road very good condition picking it up tomorrow from Felistowe
Both rubber bumper type but both will be shedding lots of lbs.
God them front bumpers weigh a bloody ton.
Bill