Thanks, Geezer. I poked around and the bores look very smooth, no marks at all to speak of. The #3 cyl wasn't firing for a month or so, and that discoloration in the bore is just some film of liquid, my guess is coolant.

What do you suggest I do with the ports? I already took it over to the machine shop but I could do something when it comes back. Just polish it up real good or..?