Slow ooze down thread of flush assembly

[IngeJones]

My new toilet has been fitted for a few days, and I have a leak. It is an Ideal Standard toilet complete with Ideal standard concealed cistern (pushbutton flush) and cabinet.

Although I checked the flush assembly backnut was as tight as it would go - it was factory assembled anyway, but they recommended you check that before installing - over the days a slow ooze coming from between the backnut and the screwthread of the downpipe has manged to start lifting the shiny laminate of the cabinet - grrrr!!

Rather than drain the whole thing down, or take it all to bits again, is there a way to seal this slow leak in spite of the fact I can't actually dry it thoroughly? Some paste that could be pressed into the crack and not be prevented from adhering by the fact the area is not perfectly dry before applying?

 

[Burnerman]

Unfortunately any surface treatments are unlikely to be a success - the only real way is to drain the cistern, dry the internals thoroughly and reassemble - possibly using a new washer and silicone.
John

 

[IngeJones]

Sadly, you're probably right. But I'm still eager to hear from anyone who can say "Oh I sprayed mine with MiracleSprayX and it stopped the leak!", so I'll hold off from doing anything other than changing the towel under it for a couple of days in the hopes...