Can you post which Lutron dimmer you purchased and whether or not it worked properly with LED bulbs. If I'm going to have to replace a dimmer switch, I might as well get one that I know works.

I know the dimmer I bought for my mom's dining room chandelier barely fit in the electrical box. Are the new dimmers smaller and easier to install?

Also, if I replace ONE bulb in my mom's dining room chandelier with a LED bulb, and the dimmer works to dim that one LED bulb properly, is it reasonable to assume that if I replaced all 6 bulbs with LED bulbs, the dimmer would dim them all properly just as it dimmed the one bulb? I would assume so, but someone in here may know for sure.