All of the switches are secured in the switch housing, so you shouldn´t have them flying apart. I just looked on BikeBandit.com and they don´t even have the housing for sale. Look on Ebay people part their bikes there all the time. I think the best bet is going to be finding a switch that will fit in the stock hole as long as it 12 volts you Should be fine. As far as your lag it might be that your head gasket is leaking. Mine had the pressure of one cylinder just slightly off and that fixed that I looked at the old gasket and there was no evidnce of a blow-out. And I wish I could tell you of a wonderful Exhaust remedy but I can´t. I´m planning to build my own system the price seams about the same but at least they will look and perform the way I want. I would really like to hear how your switch turns out. TTFN