Don't overlook the seal between the seat and the tank.
That is the likely culprit if the flapper is leaking. Try tightening it
first but you may have to improvise a tool. The proper tool comes with a
new seat.
Blue

"tflfb" wrote in message
...
Toilet flapper leaking down a bit toilet refils in about 30 seconds, any
fixes short of replaceing the rubber flapper.

I already flushed and cleaned the flapper and the flapper seat.

Thanks

Tom