Help - Toto tank leaks

I just installed a new Toto Drake and I can not get the tank to stop leaking. The leak shows up at one of the bolts holding the tank down. I have the bolts pretty tight and I am afraid of breaking the tank if I tighten it more. The tank is almost touching the bowl in the front. I tried taking it off and reseating the tank but it is still leaking.

I don't know what to do! Does anyone know what I should try?

Are you installing the rubber washers "inside" of the tank? Make sure when you install a tank to bowl that you always tighten down evenly as you go. Always snug the nuts up evenly by hand, then use a socket or wrench along with a long screwdriver to hold the bolt in place.

Sanding the inside of the tank.



I sand the inside of the tank where the bolts drop through.

Installing a Toto Drake toilet instructions