I've got a bunch of bathroom taps I installed in the normal way. I have been having a problem with vandals using all their body weight to move them in order to flood the facilities. This is a daily occurrence and means I have to redo the seal everyday to stop it dripping. What adhesive would everyone recommend to stop this from happening? I need something as strong as possible to stop these 16 stone+ lads from shifting the things! Thanks in advance.