The tightness of the bend makes a huge difference. Set the boat at half throttle (motor off). Then open the motorbox, grab the PP control wheel, and rotate it around. Watch the throttle lever on the engine when you do this. If it moves both in and out perfectly smoothly with your rotation of the wheel, you're in good shape. If it's at all jerky when you let cable out you have to increase the radius of the bend or it won't work properly. If it operates smoothly, your problem could be the gain (I believe PP calls it Kx) setting on the cruise control. Higher numbers make the PP unit respond to changing speeds more quickly.
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