Not at all - this is what you do.
The gland nut (below the turny tap) can be undone with a spanner. (DONT turn the main, larger body nut whatever you do or you'll go swimming)! You don't actually need to turn the water off for this but the dribble will worsen). So, undo the gland nut, and wrap some PTFE tape around the spindle in a clockwise direction - maybe 6" or so. A smear of wash up liquid will help the tape slide down into the gland as you do up the gland nut again. This may be slightly awkward, but the idea is to pack the gland space with the tape. Anyway, tighten the gland nut back down and the leak should stop - if you overtighten the gland, the tap will become stiff. If this is not successful, buy a new stopcock, but just use the central part of it - chuck the main body away. The house water supply MUST be turned off at the outside stopcock if you go down this route. Any help?
John
April 2009