Originally Posted by killergp123
I was wondering this too, the KM I bought from my local store, the guy said was very tight, and to put some oil on it, was wondering if this was common to do? If so, which type of oil is best to use.
It's not that strange. Food oil like canola oil should be fine. The best of the best would be a food grade silicone that can be bought at specialist food and brewing stores but that is more expensive than altering the grommet and not exactly common place for most people.