We are showing many signs of excessive frame flex/failure in our 2023 Grand Design Momentum 397THS. Our baggage/storage doors do not properly fit nor lock. The RV was in the shop from Jan-May 2023 to address this. Had the doors replaced and resealed. They still are not flush with the RV, still barely latch, and have popped open while driving. While in the shop, they addressed but ‘could not duplicate’ the underbelly continuously filling with water when it rains. Excessive amounts of water that saturate all of the insulation— causing us to drive with extra weight until we can stop and replace it all. Not sure where the water even comes from. Our filon around the hitch is seperating. Our pinch molding on both sides completely falls out. The screws holding front cap to roof popped out, sealant broken. There is wall separation in the lower deck. This causes excess rubbing of the walls, popping trim pieces off, and dust left after any movement of the RV. There is loud creaking and popping as we lift our RV off of our truck. The lag bolts are unscrewing themselves from the frame in the upper deck. Slide in the upper deck is digging into the flooring, leaving indentations, while in transit. Floor creaking in upper deck. Our electrical wiring for our running lights/turn signals/brake lights, as well as our leveling system wires were zip tied to the spindle of our slide. This caused the wires to wrap around over and over and slice themselves apart. In turn causing ALL of those systems to fail— no running lights, no turn signals, no brake lights, and our jacks would not go down.