I know exactly what you are talking about because mine is also off on one side after getting a new(USED) bottom mounting bracket from the wreckers. I tried compressing it in a vice and then wiring it compressed on both sides but it still wasn't enough to fit in. Im still driving, but i think this will work if you disable or decompress the sway bar in the rear also, but i have yet to take it in for this.
Then the next day I had another thought. If you remove the big bolt on the lateral bar,where this damper bolts on(whether left or right side) .Then you drop the bar. My 94 has a long bolt from the top that threads into the bottom of this damper. You'll probably need to compress the damper (with bracket) for the bolt to reach the the bottom thread and then as you start tightening long bolt, it will hold damper compressed. Then hopefully you'll be able to bolt lateral bar back in position and put the bolt that secures the damper bracket at the base back on. Presto