One worked perfectly, the second one did not

I am about to order my third one, because although my first works like a charm, the second one has always leaked slightly. This is not OK when brewing Kombucha. I've always kept it stuffed with paper towel, but this doesn't seem sterile and the SCOBY is continuously forming inside the spigot. The spigot is not as tight, it has some give to it, whilst the fist one I bought has no give. I've tried tightening it to no avail. Wish me luck on the 3rd try!

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