The parts and materials will be about $600. Labor will run right at 20 hours,
there is a lot of it to be done. My shop rate is a bit less than $60/hr.

How does the additional weight of the mass balance effect the c of g? I would
expect to have to add lead in the nose to get it back within limits. Adding all
this lead at both ends will also affect the all up weight so will it restrict
the max cockpit load?