UPDATE:
As it turned out, the RF Shielding was shorting out the system. That shouldn't be happening, but it's part of the cause of the problem. I had removed the shielding and the CD Motor / Drive Assembly at the same time (yes, you can run the main board with no disc drive attached.) I ran the main board for a while, and it didn't pop a fuse.
Later, I put the shielding back, and the problem returned. So I put Electrical Tape on the inner side of the bottom shielding, and that fixed the issue.
Now, whatever was touching the shielding is still touching, so I didn't fix everything with the utmost degree of work here. But it's still functional. The board has some leaky capacitor residue on it, so something's goofed up around here.
...
As for the disc drive's dampers (mounts) being too low, I just put a lock washer screw under each one, making sure they were the same size by measuring them with digital calipers. They are about 0.040" inches thick. This is working for now, but I don't know if it's going to last very long.
...
However, now I have another curious problem: this SCD 2 is not shutting off when I turn off the Genesis. I tried it with 2 different Model 1 Genesis consoles, and it persists between both of them. I can even take the Genesis Console and detach it from the SCD, and the SCD still remains on, reading discs. I thought I saw someone mention this problem on Reddit, but I've lost the post, so I guess I'll just have to ask again.
Perhaps there's a short on the board that caused the system to pop fuses through the RF shielding, and the same short is causing the system to not shut off. The electrical tape may be there, but the short may remain.
- Austin