My horse, Jerry, seems to be afraid of the wash stall. He doesn't like to go in forwards, but if you back him in he will eventually get in. He seems to enjoy the water and the sensation of being bathed, but he seems tense in the wash stall. The lighting is fine, there are no "scary" objects (except for the hose and a closet, but he's fine with them), and crossties hold the horse in.
Any ideas on what might be causing this?
Any ideas on how to get him in?