I just recently installed a helix 7si in my boat. I read on a forum that the ribs in the bottom could cause interference and u may have move it left or right to fix it some. In your picture it seemed a little closer to one rib and not center. Idk if that would cause it but it's a thought. Glad to see this post it may help me with any problems I have with mine since I have yet to put it in the water.


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