"Back-sweep" is the portion of the blade going backward as the deck moves forward. This is typically the best cutting region on each blade. The deck (and tractor) is pushing the material forward as the deck moves through it. Easy for the blade to then "go against the grain" and cut cleanly. Blade pass frequency on my new cutter is 1.1"/cut @ 3mph... so each grass tuff gets appr 3 wacks. That's it.
Forward sweep is the weakest part of the cut! Grass bent forward, mower blade also going forward = grass NOT lifted. Note: most zero-turn mowers out there have one (at least) caster wheel out front that is repositioned farther to the side. Why? They are moving a tire track OUT of the forward-sweep region and into the back-sweep.
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When a tire track aligns with forward sweep... the result is almost always "striping". It appears that is what your mower is doing (you didnt reply to my question about the tractor tire aligning to the stripe). I looked up your C114-1 and it detailed CW turning blades. From the images I saw on YouTube, their tractor tire was at the 11:00 position to the LH blade.... that's the forward sweep region. It’s GOING TO STRIPE! I dont think baffles or blades will fix it. I'd put my energies toward shifting the mower (or overlapping the passes to re-mow the stripes). Hope this helps! Randy