Few tips from me. I've found out couple of easier methods for dissasembly and assembly, than ones in BoomboxLover's instrucions (it's update time

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To completely remove the turntable (to take it out and put it where you want) you don't need to open the two halves in order to unscrew pcb to which the long cables are soldered.
I've really looked for reason why the custom instructions say that the halves must be separated in order to do this, and found no reason. There is more than enough space in order to properly place pcb together with holder, and to remove it while halves are tightened. You just need to put it in at certain angle in order to get leds in place, and after that, just straight and line it up over pcb holder holes. Besides, I'm sure that factory assembly would be a mess, if they've only partially assemebled the halves in order to be able to mount the turntabe. Turntable was definitely designed to be mounted when everything else was tightened up and finished. Same goes for its removal.
Another useful tip - once you've menaged to pull up the turning knob for tuning or volume, using of some improvized tool, don't use the tool on another one and risk scratches, but simply slide two fingers trough the hole of removed one, below the next knob, and push it from below.
BTW, I've exchanged pm with Bredgeo, and since I have only one big slider missing and another broken, it makes more sense to buy another broken original. So, if anyone has one big slider with broken stub up for sale, please pm me. I need the power button too, but that is unlikely to be found as spare, although I'd be more than happy to find broken one too (the knob that sticks out that is), the lever reaching the swich is something I'd make on my own.