We have a problem in our 344GK, a nail coming up in the bedroom floor. It’s near the foot of the bed, when its out, about 8” from end of bed and about 3 1/2’ from front closet. We cut the flooring parallel to the bed, and it is a nail. A very big nail, almost like a spike from the size of the head. Before we pull it out, would like to know if anybody knows what a big nail is holding together? And why would they use a nail if it goes into the metal substructure? TIA