The original screws for holding on the gas tank side covers on my ’07 Outlaw 500 fell out long ago and I cant remember how or what they went into.

Apparently the screws I replaced them with were too big and too long and punctured the tank so it leaks gas from those holes now. I need to plastic weld those holes shut now.

What are the screws supposed to screw into? I don’t see a threaded hole on the tank itself.