CM 2415 is Coremat. I believe they used this to help prevent print thru and some traditional core functions. It is glass. Easy to google. 2415-combo-mat-50-roll Really like all the corrected maintenance and improvements you've done. Nice.
Thanks, for that link! Combo Mat, seems structural from the description, good to know about. I've only got another 60 or so "fixes" in the punch list... <sigh>... but at least I'm making progress, and the list is beginning to incorporate some optional "nice to haves" and "round tuits." -Chris