yuup. I agree with Brian (don't I, and everybody else always?) that's why I asked the question about the switches. only the newer MB's have cut outs built into the windows. it's never a good idea to hold the button down, also if any are sticking, it's a good idea to get them clean so they no longer stick. the regulators are a pain, and they are very chintzy, so it's best to have clean and greased glass slides, and be as gentle as possible with the motor control buttons!