Yugo L4-1300cc 1.3L (1991)
Another possibility is WEAR IN THE CRANKSHAFT, where it supports the torque converter pilot.(See Figure 2)
Often the crankshaft is only worn in a small area where the torque converter pilot has been against it.
If only a portion of the crankshaft is worn, rotate the crankshaft until the worn area is at 12:00 o'clock.
When the torque converter is pushed forward into the crankshaft, the torque converter pilot will bottom on a good portion, and should center properly.