Hi, I'm a new member, have recently purchased an 850 commando, (started life as a 750 in 1972, combat engine) anyway at sometime its engine was changed and the number is the confusing bit, it starts with RSL ? Anyone come across this before as I cannot seem to find out anything about it . I'm a member of the UK VMCC and they suggested it could have been a German race engine producer? Any help would be greatly appreciated. Many thanks Ed :?: