I get the distinct inpression that things fall into holes; as far as I can tell, they do technically have plenty of stock now to operate all the services and at a proper length, but much of it is unservicable - with the depot at St Philips Marsh not now expected to be complete until September.   So, alas, everyone tells the truth on that one.    Then the SLC (service level committment), sparse though it is, tries to specify service which are approaching what's needed to meet the passenger flows. But in some areas, over-detailed specifiying introduces the oddest of quirks (such as 2 Northbound and nothing southbound on Sunday "TransWilts") and in other areas a slight laxness in the specification means that the TOC can adjust the service to meet the letter but not the spirit of the specification - again a "TransWilts" example where the objective, according to a conversation I personally had with a top civil servant, was to continue to provide a viable commuter service from West Wilts and Frome into Swindon, but in realiaty the TOC has saved itself the cost of a train set by running a train in marginal time.