This means you have not gone thru the diagnostic tests according to the tech sheet. It's in the console behind the water level switch. Perhaps you should start by using your OHM meter and checking the balance circuit you fiddled with last time. With the top up, you will notice that the entire spin balance loop connects at a white block on top of he tub near the back. Unplug this and check continuity thru the 2 wires to see if the spin balance switches make contact. All 3 switches on this loop are in series.
There are lots of reasons the MAH4000 will not achieve hi speed spin.
2. Balance switches
3. Motor control.
4. Door lock
Technicians run tests according to the tech sheet to determine what is wrong. Since this machine has both high and low voltage circuits, diagnosis is only for those who have good meter skills.
If I were you, I would replace the wax motor in the door first. When these begin to fail, you may see the Locked light show up during the spin cycle, but the wax motor does not extend far enough to engage the spin-enable switch on the door lock. An easy enough repair to see if the problem is corrected.