You are so Lucky..I have been in a Nightmare with that model.I bought one off of Ebay he said the power drive worked great but the Pinion gear and Axle gears were striped.Its next to impossible to get the Axle gears off without warping it.Thoese Pins are tough and I destroyed one Axle.I ended up buying three of them and the third one is in great shape and works wonderful.Its just like yours same color and all but not as good shape but the Power Drive is MINT.I was wondering the first two have smooth drive wheels but there the 5071 and the 5070 has the notched ones is that how there supposed to be in that model?