I see the EQ head seems to be sitting on a plate supported by 3 leveling bolts.
Can I suggest you loose the bolts and discover a significant improvement in stiffness of the mounting and increase in the natural frequency of vibration of the pier + EQ head ?
EQ heads need polar aligning, but they simply do not need leveling.
The EQ head/pier combination however works much better when it is rigid, rather than acting like a spring
