fig6 a 6d includes a working face 144 configured to deform a conical or convex cover plate 66 into a desired configuration and an enlarged axial bore 145 the stop out plate 142 is secured within the recessed mount 140 by a number of identical cap screws 146 each threaded through identical radial bores 148 in the cylindrical flange 138 and into a receiving channel 150 in the preferred embodiment a total of three cap screws 146 are equidistantly space about the central axis ca to retain the stop out plate 142 within the recessed mount 140 however one skilled in the art will recognized that greater or fewer numbers of cap screws may be employed within the scope of this invention and that the receiving channel 150 may be replaced by a number of circumferentially disposed receiving recesses not shown axially disposed within the bore 116 is a pivot punch 158 having a cylindrical body 160 and a longitudinal bore 162 axially aligned with the central axis ca a posterior end 164 of the body 160 is configured to contact the housing adapter 104 such that the axial passage 162 is aligned with the axial passage 105 in the housing adapter 104 an anterior end 166 of body 160 has a tapered exterior surface and is configured to extend through the mounting plate axial passage 136 and.