Be careful. It's easy to render a cylinder useless if you havent got the correct tools for the job.

Take the note about flaking the Nikasil off quite seriously. It's easily done.

I use diamond attachments for cutting the nikasil, with very little pressure. Just let them do their work and you'll get there eventually.

Just cleaning the nikasil off the port windows can add a pony or two as it's pretty ugly out the box.

There's also a bit of a mismatch between the cases and transfers in the cylinder, so if the cases are apart there's a good opportunity to get that sorted.