Wouldnt you know it, both my Panzer III, and Sturm show up on Friday evening. And I get home Sunday afternoon from a trip and the Sturm sort of works. What I mean is the transmitter is set on ch#B, while the tank is on ch#C. I put both on ch#C throw a fresh charged batt in, and nothing, no sound, just blinking light.......Switch the transmitter back to ch#B and success, she starts.....well, sort of. Right away start testing the functions. Main gun moves up, down, fires, but then the machine gun sound wont stop till I turn the tank off. Turn it back on and it wont start again, weird, just had it running. Ok, now it decides to start, seems like a 50/50% start ratio.......try driving it.....it decides to keep driving straight even after I let off the transmitter sticks, I learned I had to actually put a little reverse in to get it to stop, kinda crazy. After I figure this all out, I try to drive it away from me and it stops.......maybe 4-5' and thats it! Wow, what poor range I'm thinking to myself. My HL's never acted like this and can drive from one end of the house to the other without a hiccup. So since i got this from Mato, I've sent them an email explaining the problems, it seems like its not entirely on the same frequency making it act up. The other channels dont even work at all, so thats another problem in itself. Anyone have problems too? How was Mato on your return, or exchange?