I have a piggy-back oil drain plug in my 2002 Chevy Caviler. I recently had my oil changed and when the people put the plug back in, it began to leak and would not tighten. I think the guy unscrewed the larger plug instead of the smaller plug. (I tried to tighten it when I got home and would not get tight) I really don't have the finances to replace my oil pan. Is there anything I can do?