Hello! I'm new, and have had a strange problem occur with one of my tanks, a Torro Jagdtiger. The left side gearbox has become unusable; power is transmitted through the gear-train, but the output shaft spins almost freely through the black gear on it. If I remove the left side track the sprocket can spin with application of the throttle, but as soon as anything attempts to stop it, even a lightly gripping hand, it stops. From what I can tell a small pin which holds the black gear on the output shaft has broken. I am fairly sure that the gearbox must be replaced, but I have decided to ask here, as there seems to be a lot of knowledgeable people here. On another note; I've got a good few tanks now, 6 of them if you include the aforementioned JT. I would post pictures but I understand that you need a minimum number of posts to do so.