You've just gotta love industrial Pneumatic Die Grinders! It took about half an hour for me to excise all the yellow marked ribs and the 7600 MoBo is even happier in its new home. There's one small hangup somewhere, but that might go away after I clean everything up with the X-ACTO knives, chisels and single edged razor blades, my personal favorite, aside from the Ryoba! [}] ]'>