Recently installed some of thse flourescent bulb replacements. They work great but they will not dim.They are at full brigtness no matter what the setting of the dimmer is. What I expected was that the light would suddenly come on as I turned it on at somewhere less than full on and go off before I reached full off. They come on at full brightness with the dimmer just barely on. My question, Am I saving eletricity by operating at nearly off postion, doing damage to lamp, doing damage to the dimmer?