My ancho chili plants (and no others) are showing a rather puzzling problem, but I just read up on the various pepper plant problems and nothing matches. The color is fine (nice dark green), no mosaic, there is no necrosis, but the leaves are curling up on the edges. They are producing, but look somewhat wilty. I thought it might be Pepper Potyvirus Mosaic Disease, but except for the leaf curling, it doesn't match the other symptoms. Unless my drip system is just not laid outright, I'm stymied.