I have recently purchased a 2001 4600 with a 400x loader. The joy stick controls are from the original 460 FEL and are a bit sticky when curling the bucket. Lift and lowering work fine. Also, the position of the stick is such that my leg rides against it and unless I am very careful it gets bumped causing it to curl. The stickiness makes the problem worse. So I have two questions; what can be done to free the curl control and is there a way to adjust the stick to the right?