Dean,
The governor is as I suspected. The governor model on your unit is not equipped with a secondary sheave. The secondary sheave allows you to overspeed the governor.
In your first post, you said your current service provider was try to overspeed the elevator. My question is how did they do this on the prior tests?
JKH, the secondary sheave your talking about, is this a method to trigger a overspeed action? Got a picture?