I'm new to the dovetail jig by General. Mine came warped as well and i've only tried to make a few sample joints with the unit right out of the box using my router table. I made it work after several attempts, but only after first cutting the tails and then adjusting (increasing) the bit depth for the pins (by about 1/8" to 3/16"). I'm guessing that I'm doing something wrong as I didn't see this step noted anywhere in the instructions, video's or post in this forum. Any thoughts or suggestions would be appreciated?