I have for sale the following parts for the MC28:
Drivers seat. Has the front tab missing but otherwise good condition, £40 plus postage.
20190607_151459 by Paul Goat, on Flickr
Oil pump assembly. Nice clean condition, I was told it was removed from a low mileage bike when I bought it. £70 plus postage.
20190607_151416 by Paul Goat, on Flickr
20190607_151406 by Paul Goat, on Flickr