I just fitted a 123 distributor to my Normale this evening to replace my dying, presumably original one. Easy job – most time taken up cleaning the old parts. The only thing was that the rotor arm is fitted 180 degrees out from my original one which confused me for a bit when inserting it in the hole. Engine fired up first time and runs smoother (at idle) than I have ever heard it. A post mortem on the old dizzy will probably show why. I haven’t properly set the timing yet or gone for a drive. It looks similar to the old one – just has one extra wire. So far very pleased.
Chris