What are the knobs for on each side of the machine when you raise the cab up for? Is it for brake adjustment or hydraulic flow? I was wondering because at times I wish the bucket would curl a little slower when doing fine work. I need to go buy me a repair manual to get me up on things. I figured it was for the hydraulics that steer each side of the machine. I did not really look at it close to see as to where it went.