After looking through the "diagnose section" of GWE, I would tend to think (I'm no experienced grower, take what I say with a grain of salt of course, double check etc) that maybe you are giving too much nitrogen to your plant, hence the clawing of some leafs. It may also be a pH problem or a temperature problem or over watering, could also be windburn. Now as for new growth that are coming in twisted, I've no experience. Maybe, like others said, it is re-vegging. My new plants with tiny leafs have also twisted growth, probably a RH (humidity) issue. For some only, not for all... They all grow in the same space, but react differently to the same conditions.