H to H mount adjustment

[Tealady]

I have the above mount, think its called ........gold, problem im having with my echostar 3600 is that my range at the moment is a 60degree swing, from 23degs east to about 30degs west. I cant go beyond this, not because the east west limits have been set incorrect, because the motor hit the end stops.

Does anyone know how to adjust these motors, as its not exactly H to H at the mo, assuming there are screws inside the motor, but would rather know first before i get the ladders out.

Thanks