No need to cut it in half, and securing it is easy as well. Just use appropriate sized conduit clamps and bolt on behind the knife where your knife guards bolt on. The entire mod will take no more then 20 minutes and perhaps $50. We installed a 3inch suction hose which flexes with the knife.last year was the first year with NO stone damage as the hose prevents stones from entering the header all together. Short beans fed much better as well. I believe if you go over to the Gleaner site, click on tips and Gleaner mods they have more info .