Thanks for the reply Peter.

In the 110 service manual 03-340 Removal and installation of pulley, it has a diagram of the assembly. The pins are to the sides of the screw hole under cup springs. Later in the job pictures it shows the balancer without the screw and only then the pins are visable.

Same/same on mine. Can't see the pins. Wish they were visible it would make things much more simple to diagnose a problem.

Appreciate your help and time Peter. A real stumper, no?