I set up the 707 with a Creek phono preamp connected to an Aragon 18K mk2 for testing. I just wanted to feel comfortable that it is in mechanically good condition before I put it in the closet with the Audible Illusions M3A system. So, I've played it for two days and love the sound. However, one thing seemed unusual. When leveling it, I put my high precision level on the platter and got it spot on, then rotated the platter and it was off at 180, 270 and zero. I put a precision straight edge on the platter surface and there is a slight dishing. I played with the feet and it is now level at all positions. I expected the platter surface to be dead flat. FYi, I know what flat is. I have a small machine shop with a granite surface plate that is calibrated as flat within .00005, and was an approved vendor.