I have just purchased a 1980 6045. I have a user manual that I have read a number of times to try and figure out how the Inner & outer circuit levers( 3 levers rh side of drivers seat) work when using a slasher on the 3pl but they are still a mystery to me. It has a front end loader which works but the hydraulics are very slow. The 3 point linkage drops down but it does not allow the slasher to follow the land contour when it drops away. Is there an adjustment that will let the slasher follow the contour ? The 3pl does not lift the slasher very high either and when it does lift it is slow.Is this an adjustment also ? I would appreciate any assistance from any 6045 owners