I broke the hydraulic locking lever on our 4430. (The lever that locks the hydraulic hose into the servo). Have the part ordered but in the parts manual it shows the housing having an access from the top and ours is solid. I haven't been able to get the top half of the lever out. ours is an earlier model so I'm imagining the break down in the manual is of a later model? Does anyone have any experience and help to offer?