Your right, there are very few model changes. That is one of the beauties of TM. If a model is selling because it is right, leave it alone. Yes there are upgrades in appliances, etc. and they are done sometimes in the middle of the year. The big changes, such as replacing almost all wood with aluminum was done before 2004. Basically when they come up with a really slick idea, it seems to come out as a new model. If they come up with something that really works you can almost always buy the upgrades and install them, such as the new seals along the bed sides that came out last year. The new sink spigot that allowed a taller kitchen sink came out a couple of years ago and is probably the most difficult and expensive change made on the same models.
By the way, I know where there is a really nice 2004, 3023 for sale. Sorry could not resist.
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