More popular than Jesus a minor panic when a firecracker was set off on stage during the evening performance, which led the group to believe they were the target of gunfire. The Beatles hated the tour, partly due to the controversy and adverse reaction from Lennon's comments, and were unhappy about Epstein continuing to organise live performances that were increasingly at odds with their studio work. The controversy had also overshadowed the US release of their 1966 album "Revolver", which the band considered to be their best and most mature musical statement up to that point. Following the tour, Harrison seriously contemplated leaving the
London Underground Standard Stock to begin negotiations for some of the Standard Stock then being withdrawn. The initial plan was to fit diesel engines into the motor cars, and to use either electric or mechanical transmission. The first twelve cars were transferred from Ruislip Depot to Wimbledon in August 1964, from where they were moved to Micheldever sidings. Further cars followed in June 1965. In October, a plan to electrify the line was announced, and the idea of fitting diesel engines was dropped. In 1966, the Southern Region had 44 cars at Micheldever, and London Transport had 29 more which were set aside for