Our camper storage area has a crack, cracks, but one decided to leak. I am not sure if it finally opened up or if it's because we changed how we park it but it's now letting water in. The previous owner used something white to seal the crack and smeared it all over and I am having a hard time removing it. Between the roof, the storage lid and the curve of the main area I can only get a small putty knife and I am not having any luck removing it. Any tips, tricks or ideas to remove the junk? It's going to rain tomorrow, if I can't get it removed I'll just put some bathtub caulk on it to get through that storm and continue to fix it properly.