Ditto. I had(have) the same problem. Actually I saw it even before I bought it. I asked the dealer to demonstrate it and he had a hell of a time getting it off. He too said it would loosen with use. Given the few number of these that get sold I doubt he knows that from first hand experience.
I only used it for a month or so last year. But by the time I put it away for the winter it was noticeably looser. Still nothing like the video. In fact I suspect I would not want it that loose at all.
The first time I lifted the deck I had to resort to using tools to pry it off. Let's say three screwdrivers worth. By the last time it was just one screwdriver.
I did find one from a dealer north of reading, PA. Coincidentally just fired it up yesterday after it's winter nap.
Now July 2014. My local dealer told me they are not available in the US. But there are posts here of people that have them.
So are they available? And how can I finds a dealer that has them. Please don't suggest the dealer locator. I tried that. No precision what-so-ever.