I have just installed a new stainless steel kitchen sink, and I am having a problem with the two front corners being raised. The clamps that came with the sink do not hook into the corners which is where I need them the most.

How can I get the two front edges to lay down?

Sometimes it helps to put something under the clamp screws as a spacer to give a little tighter fit. What I have done before is cut a strip of Masonite about 3/8" wide to put between the sink bottom and all of the screws on a side.