I got a call from Bobcat and they are having a rep come out next Tuesday to talk to me about ways to improve on the machine. They specifically wanted to talk about the buckets and how they tend to bow in the middle. I've got a T770 we bought this year that has 200 hours on it now and the bucket is already bowing slightly. With what I do I am fairly certain it would happen with any bucket from the large boulders we carry and heaping buckets of sand it always has in it. Our Case 450CT never had an issue with the bucket but it had its own issues with the lift arms getting tweaked. I think using a thicker steel on the sides of the bucket would help. To me it seems like the center of the bucket loads up and pulls the outside corners in. Especially when a 3000-4000 pound boulder is in it.