Seems like you are sorting through it, but just to also spread the word, I grounded my Makita router to avoid ESD related disconnects (write up topic shown below). Haven’t had issues since then, but I also had major static buildup from my shopvac / Suckit dust boot and I don’t use it any more for the time being. I just vacuum by hand as required and carefully avoid touching the machine with the vac nozzle. I’ve not given up completely, its just that I’m moving soon to a more humid climate than the super-dry and cold air currently in Colorado, so I’m just ignoring the problem for the time being.