i have a brew going i think, as it shows all signs of fermenting other than airlock not moving. I borrowed fermenter of a mate and have now noticed the o ring has a slight deformation in it which i think might be letting some air escape. As i said all the signs are that it is brewing, condensation on lid and can detect some foaming so my thought is just to let it be. Is this the right course to take or should i try and fix the o ring? Brew is blue mtn lager, 1kg ultra brew,250g dextrose + tea bag tettunger hops. thanks