Due to some shoddy work from a previous owner I now find my water tank has a couple of small holes in it. They were caused by the tank shifting and coming in contact with a couple of sheet metal screws. The holes are located in the corner transition of the tank from the bottom to the side of the tank. Can I fix these by heating the surrounding area with something like a soldering iron to melt the holes closed or do I need to do something else? Like I said, they are small holes the size of a sheet metal screw. Once the holes are fixed I plan to do something to keep the tank from moving around so the problem doesn't happen again. Right now, it is just sitting on a piece of plywood between the frame and crosspieces. Thanks in advance for any help.
2006 Silverado 3500 Crew Cab
2006 Crossroads Paradise Pointe 36RL