Where are you located. There is Benny who is located in the Midlands (Wolverhampton) and Daz who is located in Newport, South Wales who can do this job for you. Send either of them a PM and they'll be able to give you information as to cost involved.
You wouldn't get away with much slippage of the chain before it broke the engine or made it almost undriveable. Being only 1 link out would cause lumpy running and a lack of performance.