I pulled the dizzy too bits and under the bottom plate there are slots where the threads that hold the points too the top plate are.
I used one of the standard original holes for one side but i drilled it and used a machine thread screw and nut,the other hole never lined up where i wanted it so drilled another in the right place and used a machine thread and nut again.
The heads of the machine bolts i used were small but the heads sit in the slot on the base plate (i put them in from the bottom) so for the new hole i drilled i had too in large the ready made slot in the base place too allow the advance too work