I'm having similar experiences, but in a different format. I have the servo set up as a single steering servo for my E-Revo Monster Truck. Last week, it sideswiped a light pole going about 40 MPH. It ripped the left front wheel, A-arms, axle, and blew the bulkhead into 6 or seven pieces. It was UGLY! I chalked it up to operator error. After rebuilding half of the truck, and getting it operational again, I noticed that I couldn't set the trim correctly. If the last turn I made was a left, when I let go of the steering control, the truck had a left list to it's course. If my last turn was a right turn, the truck veered slightly to the right. I could set the trim, but the next right or left turn I made brought the same problem back. In the troubleshooting section, the problem was blamed on the servo saver, but I didn't have this problem with the stock Traxxas servos, or the Spectrum servo that I used, before replacing it with the Hitec servo. I'm afraid I have to agree with LarryB, my upgrade feels like a downgrade, last weeks operator error is looking more like faulty servo error. AND, it hums while the truck is just sitting there, it stops when I physically lift the front of the truck and set it back down. That tells me that it lacks the power to pull the wheels back to the center position. Digital servos have 3 times the torque? And the dish ran away with the spoon, right?