An appeal has gone out for more marshals to come forward to ensure all race sessions for the Festival of Motorcycling can go ahead.
More than 500 are needed at strategic points across the course before a race can start.
Chairman of the TT Marshals' Association Terry Holmes says they have so far received a fair level of support but more volunteers must come forward.
He says it's a tougher prospect finding the numbers when you don't have the thousands of visitors that the TT attracts:
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