My last few trips in the Boxer has come with a 'minor' delay in the time between twisting the key and engaging the starter. I mean, like less than a second, but noticable. After that, all's well. Today it, didn't engage on the first try, then next twist it did. I think my ignition switch is going out, but will take other input/experience here too of course. In other searches, it says "Bosch" unit (one thread says the BMW 2002 is the same unit), yet T Rutlands has "Niehoff" originals for the Boxer. I'd like to replace it before it strands me - anyone know the definitive part info? Or source? Thanks in advance, as always.