It's amazing to me that caulking would crack. I would think that a 2013 TT would have silicone caulk all around. Even old fashioned latex caulk should have enough flex to travel. However, as I learned, the RV industry has horrible initial quality. Also, a related issues is that the industry does not pay the dealers a reasonable amount to perform warranty repairs.
In my dealings with Dutchman, I spoke with a senior manager in the warranty department. He said that one of their biggest problems was refusal of dealers to fix trailers they didn't sell. I told him that I was surprised. Car dealers always do it. I then asked him if maybe they didn't pay the dealers enough to cover repairs. He admitted that this is probably the case.
So, if you have an industry with bad initial quality and a warranty program that undercompensates dealers for fixing manufacturing defects, you have a recipe for failure. Dealers will either refuse to do warranty work or they will do it poorly because of the low compensation.
