This is quite an interesting Miracleman item - one I didn't know about either until last year. It's not a fanzine per se, it's comic published by Richard Johnston, the comics journalist. It was published after MM 24 so is the last appearance of MM until 2004's A1 Sketchbook (minus a few mags). Print run was 3,000 and there was an ashcan version.
Thanks for the info. I am looking into getting more copies at my LCS. Didn't know there was an ashcan.
Just started my research on #1 & 3. Dirtbag #1-3 is turning out to be a hidden gem.