I've got 2 dimmer switches in my office. They each have three incandescent bayonet bulbs running off them and are quite old - I'd guess about 10 years. Three questions: - Is it worth trying replacing the incandescent bulbs with LEDs to see if it works as is, or would that risk damaging something? - if I am replacing, can I just pick any trailing edge dimmer that looks decent quality? Copper finish might be nice to match with other stuff, but that's no big deal... - One of the screws on a switch seems stuck - I can't unscrew it from the wall. I can't think of any better option then pull the screw out with pliars when I have the replacement switch (with power off, of course!) and patch any damage to the wall afterwards. Any better suggestions would be great though. Thanks!