I picked up a used Art Carr valve body that was supposedly rebuilt and installed it tonight. Its a 23355-1 that has a Pro-Tree brake in it. The valve body is supposed to not go into reverse unless the transbrake is engaged, but, it goes right into reverse. It also isn't supposed to have engine braking in 1st gear, but it does. Also, the transbrake does not work. I have 12 volts at the solenoid with the button engaged, and when you click the button, you can hear the solenoid engaging and disengaging, but the brake doesn't work. When I release the button, it has no power at the solenoid. I think there is something messed up in it, but the guy claimed it works perfectly and I really hope he was telling the truth.