I replaced the 3 tank to toilet bolts and washers (properly) and also
the gasket between the tank and the toilet bowl. But I still have one
bolt that wants to leak.

It happens to be the same one that leaked before I replaced them. Is
there a trick to seal this up beyond what I've done. The fact it's in
the same area prompts me to think there might be a crack. But I don't
see any..

TIA
Charles