The Amazon LEDs I used are from WLJH, model T10-3030-2SMDTSW6. I tried to retrofit the Crossfire blue socket base to the LED as recommended, but a big fail. So, I was able to modify the supplied black base using a razor blade. The light, 200 lumens, seems right. And they turn off completely, no slight residual light as commented, although they can't mimic the smooth fade off effect of the incandescents. Not that they don't try! I'm good, thanks to your feedback and motivation.