Stern Gland dripping

[Jobs a good un]

Hi All

Can anyone advise on stern gland please ?
Mine does not drip unless i wriggle the greaser button a bit , i dont mean tighten or un tighten i mean move up and down .
I may have bean a bit over zealous putting grease in to stop dripping and caused a blockage which only releases drip when i wriggle it .

 

[vyv_cox]

Nip up the packing a little, rotate the shaft by hand as you do so and stop tightening when resistance increases.