70 duster rear brake drum/vibration question

How about axle end play, is that set properly?
Just put a new Yukon power lock posi in the 8-3/4 new axle bearing/seals end play adjuster. End play was set properly few thousands play.... can you see the picture of my brake drums? Any opinion on the gigantic weights on one drum vs the other drum. Does that not seems highly suspicious that when I hit 80mph that drum is starting to do the wobble gobble with all those weights on one end? And can’t just run out and balance a drum everyone laughs when I ask saying no one balances drums go buy new ones. Ya well buying a 5x4 bolt pattern drum isn’t just a trip down to the quickly mart part ... lol.