As far as adjusting the brakes there is an adjuster on the lever that the slave cylinder pushes up to apply the brakes. Check that the lever is moving when the brakes are applied. If it is then you just screw the adjuster down to tighten the brakes. As a rule you should not steer the machine with the brakes except for real fine turn corrections. The perferred way to steer is toHave both tracks in high speed and if you want to turn right put the right track in low speed. Or you can run bot tracks in low speed and put the left track in high to make the turn. This way you have power to both tracks and can push more of a load while making a turn. You can also pull the right track lever into neutral while in a push and the machine will turn gradualy to the right but you dont have much control over the speed of the turn and again have no power going to the right track. When you use the brakes to turnyou are also declutching the drive that you are braking. The 450C has dry brakes so if you use them to steer you will wear out the brakes fairly often. We have had to weld the pedals together for some of the operators to get them to steer with the track speed levers and not the brakes. Sounds a little extreme but it beats replacing the brakes every couple of hundred hours.