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I bought a 2020 L3901 with bh77 hoe. From day one, when I'm on a hard dig the dipper has a chatter or quite short jumping pattern. It starts when dipper is just about at its hardest pull pressure, then when I pull back the boom to help the dipper along it chatters even more till the ground...

Hi,it's Tim My bh77 backhoe won't swing to the left very fast, it's extremely slow. It does swing right no problem.If I operate it for a while it starts working ok. I admit sometimes I did push it myself sideways not running to fit in garage. Did i damage a valve or what could I look for ...