Any taxidermists here? Red Stag shoulder mount cleaning and care.

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Is anyone here a qualified taxidermist? It was recommended to me that mounts be professionally cleaned, treated and checked up every 10 years. I have a Red Stag that is getting on 10 and could use some care. It is my only mount and my knowledge on this sort of thing is not great. I've tried researching this subject but everyone has different contradicting opinions. Some say to wipe down with a damp cloth and others insist  no moisture whatsoever. Most seem to like WD-40, furniture polish while others others say it's a big no-no.

What is the professional way to care for a mount and roughly what is the cost for a full cleaning and touch up? The black areas around the eye lids could be touched up and his nose looks a bit dry. Other than that the mount appears to be in great shape.

Any help would be appreciated. Thanks...