bent housing 10 through a series of passages not shown running the length of the tool or through the tubular interior of the mandrel 40 and the articulating member 140 or some combination thereof one or more of these drilling mud passages may be closed or restricted when the downhole adjustable bent housing 10 is in its deployed configuration thereby providing a backpressure detectable at the surface for determining the position intermediate or deployed of the tool when the pressure in the drillstring 30 is again reduced below the threshold pressure this begins the second return stroke the final stroke of the cycle at the onset of the second return stroke the mandrel 40 again reverses direction and returns to its original inactive position shown in fig2 a on the second return stroke the guide finger 55 slides or rolls within the second leg 252 of the second actuation groove 52 toward the distal end 43 of the control collar 42 toward the intersection of the second actuation groove 52 and the first leg 153 of the second return groove 53 the guide finger 55 passes from the second leg 252 of the second actuation groove 52 into the first leg 153 of the second return groove 53 the first leg 153 is not aligned with.