We have a CF29BT with a factory installed ladder on the back. I was on the roof to sweep it off and when I came down, I noticed water dripping on the bumper(has not rained for 4 days). It is coming from the first step. Will the tube that is screwed to the back of the camper fill with water? Will it leak into the back of the camper? Can I drill a hole in the bottom of each ladder leg to let out any water that may get in?