I'm new to traditional stern gland. I've repacked and refitted it, and generally seems ok. However, it was getting warm, so I gave a couple of turns on the remote greaser( thinking hot = lack of lubrication), but I think it then became hotter still. I know its meant to be leaking something like 4 drops a minute, but not always easy to tell if this is actually happening. How tight shold the packing nut be? Just hand tight? Would too much grease create friction? Could anything else be happening?