I agree with ShabbyJ. I received a "new" 620 board last Christmas. It is NOT worth the money. The older 620 boards are built better. I had to adjust the tension rods underneath the board in an attempt to level and support the field and frame. The older boards have no tension rods they weren't needed. The metal was not as thin as on the "new" boards.

Save up for a "Big Board" or look up "building a big board" in the forum.
That's what I am doing. Good luck.