We allow 30 seconds either side of the time frame. If the piece is significantly under the time allowance, then there might not be enough material for the examiner to adequately assess. If the piece is significantly over the time allowance, then it can affect other learners, as the examination would overrun. Examiners will not time pieces during the exam, however you do risk your learner being invalidated if the examiner feels there isn’t enough material presented for an accurate and fair assessment.