I just bought a TA40 and I’m wondering about the drive line specifically. My first problem is the diff lock won’t work and I haven’t found any blown fuses. My next question is how much power should the rear 4 wheels be putting to the ground? The front axle seems to have all the power while going forward, if the ground conditions are wet or slimy the front end of the truck will spin out all the time while the other 4 wheels don’t spin at all. While backing up the the truck will spin wheels on all three axels. I’m wonder what would cause the difference and this is normal, the truck is very helpless if the ground conditions aren’t just perfect and dry. Any help on how to possibly fix the diff lock and tire spinning issue is much appreciated.