This is what I've learned to do with the Tamiya turret and it's many wires. If I develop a problem, I remove the turret from the tank, then try the recoil and elevation units. I've found that if they work fine with the turret removed from the tank, I better look at my wire routing again. Usually, that is the problem. As far as ungluing the two turret halves, I can't offer anything to help with that. I did learn my lesson about using ca to glue turret halves together, I won't do it again. On my recently finished M-51 kit, I used a glue called Aleene's original Tacky Glue. It reminds me of Elmers white glue and is water soluble. I haven't needed to try and separate it yet and it is holding fine. Since I cleaned up the wires on my JS-2, I've had no problems with my recoil unit.

Also, I've made it a point to count my turret revolutions (usually only one) I then will return the turret in the opposite direction and just not leave it. That has helped also.