My only suggestion would be to get an anode on the inside of the part you're trying to plate. One common theme with chrome is that it doesn't have much throw. So, you have to get the anode up near where you need the chrome. Make an anode that will fit inside the area and yet still has enough surface area. Bending a piece of 316 SS sheet into a cylindrical shape is one way. The SS doesn't have to be very thick since it doesn't erode in the plating tank. .018" 316 SS can be bent up pretty well. Or find a piece of 316 SS rod stock perhaps .5" diameter.
Put an anode bandage or bag around the anode in case you accidentally touch the anode against the part while it's in solution.
If you are going to attempt this with a hand held anode (not recommended), make sure the area is well ventilated!! Don't breathe the vapor from the chrome plating process. It's not good for you.
Ken
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