I frequently get a dripping overflow from the pipe exiting my cold wate
tank(flat with water tanks feeding h/w immersion type cyl. & g.c.h system) When I flush the bath/r. toilet it will sometimes stop However I have just noticed that the back wall of the of toilet bowl i wet. Would a faulty seal in the toilet cistern cause overwork of the ballcock in the water tank & lead to the frequent dripping? I hav already tried to bend the lever arm in the tank
-- mikehh