Well, the answer to that is no, would have done the same as you did. if the mod tensioner failed, it would not result in more damage. This what happened to the garage I worked for. Customer buys a used TD5 disco, the oil pump drive falls off and takes the engine out.We obtain a low hours engine from a redundant transmission test bed, fit it with a new oil pump, and fit to vehicle, it runs very well indeed, better then the original.Customer collects vehicle and is happy. Three days later customer returns, saying the engine is no good, and he wants a genuine LR replacement unit.We get an independent assessment, which confirms the engine is fine, so we refuse his demand. Customer goes to court, and wins his case, we were instructed to comply with his demand, and provide a loan vehicle during the repair . Costs were awarded against us as well. We also had a well used 300tdi which had a head gasket failure, that had a rebore, new head etc, and was fine. Customer refused to accept the repair, demanding a new, not even a LR exchange engine. Went to court, won his case.