Edit: Using more oomph than I am used to I did get the dials to turn with thumb and index finger. My guess is that the dials have not been turned in quite a while

Got the turret caps off with the help of a neighbor specialty wrench.

However, the dials do not turn with simple finger pressure.

Am I supposed to loosen the screw?

The screws currently look unturned:

Loosen the screws and see if they turn that way.