Oh no, back to Bars and Chains 101 for me, I must have been daydreaming with Aqualung in my head thinking about girls & frilly panties running when we covered this in class Ok, I reviewed all the issues involved here again about going to 3/8 picco. I remember StihlHead covering some of this here: http://www.hearth.com/talk/threads/ms180c-jump-on-it-or-pass.92788/page-2 It's those large format "024/026" rare bars that we're talking about huh! Here are two other threads on the subject: http://www.forestryforum.com/board/index.php?topic=15956.0 http://www.treeworld.info/f40/3-8-standard-vs-3-8-a-11269.html Man, after reviewing all this, I think it might be easiest just to put a shorter 16" bar on that 024 and run the .325 full chisle! After all, I'm not going to tackle anything big with this saw. I've got other toys for that!