Wow. I disagree with so many of the comments made here. But, not wanting to get into an argument on my third post, I won't tell you which ones
Thanks for the link to Zzap Zzuperstore, I had no idea these existed.
It sure does. This might be of interest. It is the latest scanning guide released by DCP, who specialise in comics scans. Many of the same techniques apply to scanning magazines.