JimG,
what part of the dipper don't you care for? I am redoing my 216 at the moment. I am getting my babbitted rods machined to take inserts. I have bought the inserts and it will be a nice clean installation when I am done. The one kicker is that the old style rods had shims and you could adjust the clearance, given everthing else was OK. Once you switch to inserts, you loose the shiming ability.