Hello!

Not sure what you mean by releived, or what you're trying to do.

How deep are the marks? You'll get better information from here if you can figure out how to post pictures.

Check for cracks on the exhaust bridge. They're bad and will be a major cause of the wear of which you speak.

mc 15? What is that? I haven't heard of one and google images would have me believe it is some sort of ultralight, a subwoffer or some really ugly girl pulling faces.
_________________
MC21 Honda NSR250. TYGA 300 conversion.