An express contractual provision that an expert 'will not act as an arbitrator' has operative effect and is almost conclusive evidence that the process is not a judicial inquiry; it is not displaced merely by the parties agreeing to procedural modifications such as permitting cross-examination. Procedural manoeuvrings during the course of an expert determination, including consensus on cross-examination, should not be confused with contractual variation that changes the fundamental character of the dispute resolution process.
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