Hello, we have just purchased a 2011 Wolf Pack 19 Toy Hauler ..I am now attempting to install a wheel chock for a motorcycle. Bit of a problem ...I need to install it just ahead of the wheels ...but I know the fresh water tank is there...also the under belly is covered and ...I am not sure how to remove the cover so. I can secure the bolts from below with a washer and a nut ....anyone else have this problem.