dumb question, cow trough leaking

[mopani]

I would get some teflon pipe dope (a thread sealing paste). Take out the drain plug and the bulkhead itself, then cover all the sealing surfaces with pipe dope and reassemble. It will lubricate the parts as well as help seal up any small imperfections in the plastic.

I was told that by 3 FB friends and I will do that, thanks