I don't believe the polished finish would benefit methanol any more than gas. There is way more methanol in the air stream you are trying to keep suspended than gas so I think it is better for both. I think a person would see more surface tension on the polished port than on a rough port.
Andy I didn't mean to sound like I was talking down to you that certainly was never my intent, just talking out loud so to speak. Talking to Chad could still be helpful though since he does porting and could maybe add to the polished question. I hope you get a better answer than I could give, I hate to see someone spend dollars with no ROI.
Curtis