Went to tighten the belts yesterday, took out the battery tray, and lo and behold, I have a hole in my inner fender. It's about the size of a half dollar right where one of the supports bolts in. It looks like one of the PO's batteries must have leaked slowly for some time. Next to the rust hole, there are two streaks where the paint has been eaten away. Any suggestions as to a fix? I am thinking about cutting the rest of the rusty metal away, and welding in a patch, the POR15ing the heck out of it. I guess the PO just forgot to tell me about it?