Well, I know that the old Delta P-20 was made to cut a little aggressive and that the blade is tilted so the top cuts into the wood before the bottom. When I started doing puzzles in 3/4" stock sometimes the pieces fit too tight. I knew this would be a problem as whenever I make a tight turn the top of the wood makes a bigger turn than the bottom. To overcome this, I had to shim the back of the table about 2o up to give the blade a 90o angle to the table front to back. WOW...what a difference. I did some test cuts then cut some puzzle pieces and they slide perfectly in place from the front and back side. It sure makes cutting these things a lot easier.