Since starting the hobby I have taken quite a few engines apart for battery or bulb replacement, series wiring that sort of thing. For the most part it's pretty intuitive. Find the right screws and lift carefully. Replace with out pinching any wires. All good. That was until last night when I went to get the top off of a Premier PS2 S2 Alco. Two little screws in the front and then these 6 "tabs" in the back . Per the manual just "press the tabs in" and lift. Holy crap !!! An hour later I was still at it. Good thing no one was home to hear what was coming out of the train room. Fortunately it went back together easier than it came apart.
Anybody have similar experiences they want to share?