Bachmann Class 166 DMU : Repair Request

A chap called John sent me this Bachmann Class 166 DMU. He bought it off ebay only to find it hardly ran. Merch - https://oobillmerch.creator-spring.com Support - https://ko-fi.com/oobill73561 FAQ - https://ko-fi.com/post/FAQ-C0C6E0UO4