Daring derail set problem....help!

Haha! Yeah, he is fascinated with how things work. He's taken apart so many engines to see the motor. I can't tell you how many trains we've had to fix and he always wants to see the insides. It is annoying and adorable at the same time, lol.

I did think about doing something like that. I was hoping to avoid the hassle though of buying and reselling. I'll give it a little time before going that route.