Sorry if this has already been posted. My nova was leaking like a siv only days after purchase. It was leaking from the bottom threads. The OEM o-ring is quite flimsy so I took it off and replaced with a 11/16 x 9/16 x 1/16 o ring and have not leaked a drip yet from the threads. I suspect a slightly thinner o ring would work as well. Trick is it needs to stretch to fit over the threads and be slightly thicker than the OEM one. Ditch that Teflon tape and replace your o ring