The knob on my Olympia steam valve is a little loose and it needs lube. For the life of me I cant figure out how to remove the cover cap to access the screw. Srobinson, are you out there?
Simply press on one side of the white plastic decorative trim cap. It will sort of snap down on the side you are pressing on and the other side will pop up. Simply lift out the cap and you have access to the screw underneath.