Maybe you can upload some pictures so we can more accurately advise you.

"Robert" wrote in message
oups.com...
We just pour in place a countertop with an integral sink, our first
experience. We did forget one important thing, water need a slope to
drain completely from the sink - shame on us, our sink mold was
perfectly flat and level. The dimension of the sink is 13 * 8.5. We
would prefer not to have to grind the slope in because that would force
us to redo our perfect drain hole seat. Any suggestions ?