Hmmm, I just noticed that I have the 3rd SCV lever. Thought that was the PTO selector lever but since I have no mid PTO there wouldn't be one of those. Anyway I use two of the rear hydraulics remotes to operate the blower chute (discharge) and control these with the main SCV lever via diverter. 3rd remote is unused so I guess the lever is for that one. Would not be useful for a blower since one needs two hydraulic lines to control the chute. What implements would make use of the third line? And are there implements that would require all three lines? AFAIK a backhoe only uses two...