sean mulligan's site shows he used four 'holes' to remove the steel. this matches, though i can't find the site, what i've seen the same repair on a 'classic' M17. sean wasn't able to remove 100% of the steel ... his site covers details on what was left (a small amount). dave scobie :: M17 #375 - SWEET PEA visit SWEET PEA's www-site - http://www.m17-375.webs.com --- On Wed, 1/12/11, Earl Landers <elanders@bak.rr.com> wrote: Eldor M17 Motu iti, The problem is that the steel punchings, which are about 1/16" in diameter, are rusted/glassed into a singular mass. Once I break them up with my air chisel, they are easy to remove with a shop vacuum. I have gone as deep as the shaft of the chisel allows, the body of the air tool is too wide to get into the cavity of the trunk. As I was writing that, it occurs to me that I'll have the same problem if I cut holes in the sides of the trunk. Earl