Deadlifts

Hello Blenders!

I have a problem with deadlifts. As we know, they come up pretty often as they're Kelli's favourite exercise. I have fairly weak core, especially lower back. That's why I'm doing FB Abs right now. (Love it, by the way!) When I do deadlifts, I feel like my lower back does most of the work instead of legs. I always make sure to have straight back and proper form - I work out in front of a mirror. I tried lowering weights, but it doesn't help much - I still feel it in the lower back and it's no challenge for my legs. I tried to have legs wider apart, closer to each other, everything! Is there something I'm doing wrong? Or should I just keep working out and hope my back gets stronger?

Thanks for any help!