Pah, I hadn't payed much attention to the guide horn itself, I was more fixated on the track pads. The cut corners of the Abrams pads are pretty distinct and kinda the focus of my attention. Hopefully upgraded metal ones will end up being more accurate! And Nemo, I had already thought about that, I have put alot of metal on my tanks that were lacking. I have also put bigger motors in to help with that. I was also thinking about a larger pinion to speed it up a bit. I like the torque from the 4:1 gears, but would like to speed it up a bit.