Is it locked because it is so tight you cannot put slack in it? In any event, before I ordered anything or took it anywhere I would disassemble as much as I need to to get to the bolt that holds the one end on the lower outside of the seat. That can't be much more than a 10 minute job. The bolt will either be a large Torx or maybe even a triple square, so if you question your skills or your tool supply, take it to a trusted indy shop and suggest they try that. Once you unwrap it it may work again. The instructions will be on the NewTis site.
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