My Royal is making noise/squeaking as I turn the crank assembly.

Like a squeaky door hinge, the Royal may benefit from some lubrication. 

Lift the adjustment crown to expose the metal parts of the drive shaft, and apply a light application of food-safe oil to this area. Avoid using any more oil than needed, and do not get it into the burrs: The oil won't hurt your grinder, but we wouldn't want it to make your coffee slightly oily or affect the taste at all. 

We recommend using a toothpick to apply the oil with precision. Wipe away any excess. 

Next, try adjusting the crown to a coarse setting (about 2.5-3 revolutions) and then back to the espresso range a couple times.