Todd, we have a few places where the last wheel will drag going through a creek or waterway, not common . Don't know about the 32 or 24 rows but maybe their worth checking into ?  We don't have insecticide either, ours works fine, the units could be wielded better,  but that's the most trouble we have had . If you like to get close with the markers  you will have trouble there also as they don't have shear pins . The 2600 we have has done a fine job has KPM II monitor.

I don't recall a lot  of improvements in the 3600  but im sure there were I just don't remember .

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