Jim, your Regia is looking much better. Keep feeding it! The premature death of your leaves makes me wonder if your media is either too waterlogged or too dry (I'm guessing the first), but you mentioned how you don't think this is the case.
Here is a pic I posted before that shows how much D. regia can curl on its prey (3 weeks after receiving this plant from BobZ:
I didn't know this until last month, but the leaves will actually uncurl all the way back again after they've eaten everything AND they will produce huge dew globs again. What an awesome plant!