I'm looking for a skilled handyman to diagnose and repair a persistent water leak under my kitchen sink. The leak appears when running the tap, and there is a small damp patch on the cabinet. Please provide an accurate assessment, bring appropriate tools, and use reliable repair methods to prevent further damage. I’d prefer a tidy, up-to-date fix and to avoid mess. If replacement washers or seals are needed, please quote for the parts separately. Availability this week is best, and I’m flexible on timing as long as the job is completed before the weekend.