We've had that style of grader. or maintainer for quite a while. They had a Puckett Bros, an Alitec, and this is the 3rd Mauldin. We had 2 413 Mauldins I think they are about 2 years apart. Did a lot of work, and still do a lot of work with them. The newest one a 415, they made a lot of changes, solid front an rear axles, 4 wheel steer, more traction and power but way more electronics. Single joystick for all functions. Any time someone needs to move it, I need to put on a training course...... Joystick, when starting machine is in grader mode. Small button on front of joystick, double click it like a computer mouse to put machine in loader mode. Above button you just double clicked, there is a side to side toggle. Move it all the way left or right and hold it. On the side of the joystick facing you, there are 2 up and down toggles. Use your thumb to move the toggle closed to you up, while still holding the front one to the side. This is me on the phone trying to explain to someone how to lift the ripper. Lots of bugs, couple weeks ago, it would not move with the blade down. it would move with the blade up, but we had to push it on the float. Our mechanics looked at it. Hydraulic guy came for a peek. Dam think worked like a top, and would not act up. Month ago, it wouldn't steer, but it was a valve. before that, the 4 wheel steering would not turn off, and it is not as nice as it would seem. If you are close to a building, and turn away from it, it turns the back end towards the building. If you don't use the steering, after a while it will drift to the side, an she dog tracks. Worst thing is we have no support. The dealer has no idea about it. When we bought it, the tech came to show me stuff, and I ended up showing him stuff. Mauldin itself is great, I have spoke to guys at the factory, and they are more than willing to help. Another company about an hour away bought one, and are having issues. If they had have up graded the drive train, and engine, and kept the old controls, they would be awesome.