Here is my story...after two attempts to purchase this joiner, I went with the PC 557.  Both of the Dewalt models I bought had their fences racked which caused the biscuit slots to be cut on an angle.  Cutting a #20 slot was off about 1/8" from left to right.  Plus, reports of the chute clogging are true.  It was worth $30.00 more to get the PC.