Think we're on to something with the feet. I only unscrewed 1/2 inch to allow adjustment. Suspect the feet somehow impede movement of the thrust plate if not extended.
After talking with you and then seeing this.
If your 4 springs are worn out holding the thrust plate, and the weight of it you might not have the space needed between the feet.
The springs holding the thrust plate can be tighten some. Look under the table and you'll see the 4 screws with the big washer that will raise the thrust plate away from the feet/bump stops. Adjust them all equally so as you see the edge of the thrust plate hanging down around 3/8 of an inch past the bottom edge of the outer plinth.
