Crack in side wall . This Crack was already fixed by the Grand Design once . A year later I looked at wall and Crack is back . This is one of many issues regarding this rig . Most of which I fixed myself . 1st issue the door was improperly installed . It would open going down the road . I fixed it by reinstalling door . 2nd issue main floor of rv has hump in floor , north south , using Lazer the hump was 1/2