We have a 2017 Kodiak Ultimate Travel Trailer 290RLSL. This is from when we first bought the trailer in April of 2017. The vent for the water does not seem to be venting the tank, even when we fill the tank slowly the air expells from the water fill spout. If we fill the tank the floor bulges up in the middle of the trailer. The floor near the back of the trailer cracks when you walk on it and the floor is extermely uneven. We took it to Arlington RV in Rhode Island in September of 2017 and there not sure what was going on. When contacting Kodiak customer service they say that the trailer is not covered on the 3 year structural warranty becuse it was made in the first part of 2017, not the second which it would be covered. Since this hasn't been fixed I felt that it should be resolved by Kodiak. This is workmanship issue.