You are most welcome. I like Robart scale tires, but I think that you should not expect them to fit the Robart gear made for the Great Planes GB (although, I wouldn't hate it if they did fit and think that Robart missed an opportunity by not designing the GB gear to work with Robart 4" wheels). However, I would expect the Robart gear that was made for the GP GB to fit the stock wheels that come with the GP GB and that is a legitimate complaint. Reconsidering, if the Robart gear for the GP GB had fit the Robart 4" wheels, I'd bet that the Robart gear would also fit the stock GP GB wheels, so you may have a legitimate beef with the Robart gear on that account. I'm now thinking 'class action lawsuit,' are you with me? If the stock wheels couldn't be sanded down to fit, I might be more serious about a lawsuit.