Final assembly is often done at dealerships and that's likely the weak link. I'm sure you will have it bulletproofed by time you need it again. I have a 3 PT bush hog and it's the cheap square body style - so it's a real PITA to use in tight spots around trees. It will cut any tree my tractor can bend over and turns t-posts into pretzels. Just not good for in the woods. That's where your brush cutter would excel. And you can groom edges of thick brush up high like you did in this video. Another plus for your enclosed skid steer: You will see the yellow jackets attacking before they get you... my tractor simply cannot outrun the angry buggers! Lol

in other words cheap Chinese junk. I have bought some of these products and they are disposable crap.