Stahl Dozer drive motor help

[Kaf343]

So I bought a used Stahl Dozer and right after binding my DX 8 to it one of the drive motors smoked. I removed the motor, took the end cap off and noticed one of the what looks like capacitors inside of it smoked. Anyway I need to get a replacement motor for it, any ideas of were to start looking would be helpfull and appriciated. I've ordered a few geared motors from Palolu that look to be the same size but would like to just replace the motor if possible.