Its a lever, not separate knobs. It is loose and wiggles. I have to play with it to get the faucet to stop dripping.
I tried an allen wrench. The one that fits in the whole doesn’t turn. It just gets stuck. What should I do?
The handle it not tight, that is the problem. I tried an allen wrench after reading Earl’s answer and it didn’t work. The allen wrench gets stuck and the handle doesn’t tighten. What else should I try? Could I need a new screw?