hi guys,just bought a project sabre.i´ve got a spark on the 2 front plugs but nothing on the back 2.changed over power wires from working coil to duff coil and get a spark so i know it´s not the coil.i´ve tried a new piece of wire from the coil to a electrical box under the seat with no joy,could it be the ignitor box under the seat?if so are they the same as there is two or are they different to get the correct sparking pattern,any help is much appreciated,thanks.