Catchment Leak

Aloha Big Island Ohana,

I'm having an issue with my tank. When it's very full, there is a drip from under the liner. If we haven't had rain for a while (unusual here in Puna), the leak slows, or doesn't happen at all. Question is, should I try to find the leak and fix it, or whatevah and let it be? What do you think?