I have found a rather homely option. I picked up an old BIC dust cover that fits over the TD-124 without hinges. This dust cover was designed to hang over the rear edge of the plinth so the rear edge was about 3/8 inch lower than the other three edges. I put masking tape on it to protect the finish and used my router table to cut the rear edge off even with the remaining 3 edges. However, the original hinges will no longer work because the hinge design shifts the dust cover back about 3/16 inch. Then the cover will not clear the front of the TD-124. I plan to scrounge around and see if I can find some different hinges that will work better.
Once I get it to fit properly with the hinges it will look OKish. It has a brown tint to it I'm not fond of. However, it was free so the price is right.
It will due until I find something better.
Also, I am in the process of modifying a Q-up for this table. I have run a few experiments and found a solution that should work. I plan to mount the Q-up between the right edge of the TD-124 and the SME-3009 tonearm I am using. It will be placed almost parallel to the tone arm when it is at rest. The difficulty with this plan is the arm cannot reach the release. I have experimented by scotch taping several shapes of onto the release to get the tone arm to release it. My experiments so far have shown that a 3/16 inc diameter cylinder will work. I have liquid steeled a small cylinder onto the release. Once it cures I can mount it and see our it works in practice.