Rear end location wrong? IM STUMPED!!!

Put the car on jack stands and let the rear hang without the shocks. Remove the tires and drum, Measure the width of the wheel house to see if there is a difference from the rail out . Find a straight piece to hold against the axles to measure from axle flange to Quarter lip, a level would work.

Check the difference from side to side the way you have it tightened in.

Then loosen all the hardware holding the rear in. This would be, The 4 nuts in front holding the hanger, The large bolts through the bushing in front of the spring, The 2 bolts holding the rear bracket. and U-bolts . Shackles can stay tight .

While the rear is hanging center being held where you want it. ( I would use a bent bar off the side of the carrier snubber and hold the rear center) . Then tighten the 4 front nuts and the 2 rear bolts on each side.

Check your measurement then tighten the U-bolts. Check it again To see if the leafs are arched to the side .

Put the weight of the car on the rear axle how ever you want and Tighten the front bushing bolts. Then install the shocks and tires. Should stay center.