Sounds to me like the repair shop tried to align without loosening the Safe-T-Plus first. No wonder they had so much trouble. Now that your alignment is correct I would have the unit installed...somewhere other than the garage that charged you the exorbitant price.
The cost for install is higher than removal because it involves test driving after the initial installation and readjustment. But is well worth it especially in cross winds and in the event of a blowout.
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