CMW verified by phone they had some worm gears in stock. Order placed for that and a few other general maintenance items. Wife is enjoying her new camera.
Won't be able to install new gear for maybe a week or so. Will post results after I do. Pretty sure Chasfield is correct about pressure not being able to build. Not only was seal not bonded into gear but fit was extremely loose. Will scope out any other possibilities again before I button it up.