Hey guys I have a new 4120 with the 400x loader and hd bucket. Is it normal for the angle bracket on the loader arm to move and smash into the loader arms. Mine has already gouged the paint off after 10hrs of run time. The pin that goes threw the loader are is as tight as you can get it but the pin still spins in the loader causing the bracket to move. I can take my hand and rock the brack back and forth.