Hey All - In addition to the o-ring for the tank petcock should I use any other sealant when I re-install it? Or is the o-ring sufficient?

Thanks

Fresh o-ring is enough.

Oh, forgot - there are rubber coated washers on the bolts. You need those, too or the bolts can leak. Or some other gasket thingy for the bolt heads.

Thanks, adidasguy.