Someone has got to be thinking, thats an awful lot of screws, and those are really close to the edge.

Well, we need to miss the grooves in the back of the support blocks and we have slightly over 7/16 of an inch to work with, check out the next photo. So, we used number 6 screws that are 1 1/2 inches long. Six screws on each side. all drilled, counter sunk and pilot holes drilled