heres the links to get all 7 issues for free in pdf format, loads of info on machine tuning 
http://rapidshare.com/files/381752486/MGmag.part1.rar
http://rapidshare.com/files/381752417/MGmag.part2.rar
http://rapidshare.com/files/381752502/MGmag.part3.rar
http://rapidshare.com/files/381750692/MGmag.part4.rar
if like me your not a paid user of rapidshare you'll have to download each one seperately and be limited to the ammount of time you have to wait before you can download another one etc but its well worth the wait.
http://rapidshare.com/files/381752486/MGmag.part1.rar
http://rapidshare.com/files/381752417/MGmag.part2.rar
http://rapidshare.com/files/381752502/MGmag.part3.rar
http://rapidshare.com/files/381750692/MGmag.part4.rar
if like me your not a paid user of rapidshare you'll have to download each one seperately and be limited to the ammount of time you have to wait before you can download another one etc but its well worth the wait.