Hi guys, I'm looking at buying a dozer blade for my 66 JD 4020. This one is attached at the drawbar just like every other blade would be. The part I am leery about is that it is shackled on the front axle. Is this normal to shackle a blade frame on a front axle like that? Would this cause any unnecessary stress to the axle body? I just presumed most would be connected at the 4020 frame, I may be wrong with that presumption. Anyone with any experience with a 4020 blade set up would be much appreciated. Thanks.