Hello all,

I'm trying to determine if the cylinders on my MC21 are A, B, or C type.

The front (horizontal) cylinder is clearly marked "B", but I don't see a mark on the rear cylinder. I've checked at the base of the cylinder and next to the exhaust. Engine is stock as far as I know.

Do both cylinders bear an identifying mark, or are they both identified by the mark on the front cylinder?
Also is it possible for the cylinders to be of different types? (ie. front A and rear B)

Thanks in advance, and apologies if this info has been covered elsewhere.
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