Soon after I bought my BX about 4 years ago, the ignition switch started acting up and wouldn't send power to the started solenoid. I bought a replacement off Amazon, and it worked fine until last year when the key could be removed in the run position. I didn't think too much about it, but last Monday when I finished mowing the yard, the key and fob were gone, fortunately I have a couple of extra keys, so I stuck a spare in and shut it off. This time I bought a replacement from Messick's, my local shop was out of stock, and I replaced it on Thursday. They are really proud of those things, $89.12 proud. At least now the key can't be removed in the run position. I'll probably find the missing key, unless it got picked up by the mower and destroyed, although I never heard a noise if it did. I think I'll make a lanyard and put the key on it, then loop it over the throttle lever so it can't get away.