Hi all i,ve read up on how to set up mechanical clearance of rockers to injectors but with regards to the setting up of the electrical side do i have to have the injectors re-programmed at landrover dealer or is it time i brought a Hawk eye /nanocom ,will nanocoms not do this.? I have just put a new rockershaft in and also noticed that three injctors have blue tops and two injectors have black ,does this relate to anyhing!!!