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For my first attempt, I attempted to clear some area in the woods and quickly discovered that rotary cutters are not meant for uneven terrain. Besides just the shear difficulty of maneuvering with it, I experienced a lot of issues with binding my top link. Only after I got home and watched some more brush hog videos, did I discover going on uneven terrain was kind of a no-no, especially going in and out of valleys/dips/etc.
Other issues I had is that my hydraulic top link quick connect kept popping loose. Not sure why that was happening.
And the other fittings on my top link kept loosening, causing me to loose hydraulic power. I'm assuming all this was because of the binding. I guess I'm pretty lucky I didn't do any major damage to the PTO but it didn't bind up. But you live and learn. Kind of a tractor rookie here. Have some seat time, but not at doing anything more than a little light gardening work for years.