being a habitual slicer, is it alright if it feels like there is more effort to roll my right hand over my left through impact? I think i remember reading somewhere that the hands should be passive and the face will square if my body motions are correct, but this is clearly not happening for me. I am much more actively trying to close my clubface with my right side to swivel close, but am i reinforcing another bad habit? I can see how the timing aspect could become an issue and not so reliable.
Do you own NSA 2.0? Everyone should own NSA 2.0, but slicers REALLY should own it!!! Seriously, if I had no money and had to choose between a full set of golf clubs or NSA plus a set of 10 clubs, I'd seriously sell 4 clubs. And NSA is cheaper than that anyway!
Yes, as a slicer, you will need to do some more active work with your hands to turn the clubface off the plane and square it up. But I would caution you that the idea of "roll[ing] my right hand over my left through impact" has the POTENTIAL to be a very problematic swing thought because it can lead directly to flipping (i.e. a bent left wrist before and at impact).
What you want, instead, is a bit of twistaway on the backswing followed by a wedding ring up swivel. With wedding ring up you don't so much roll your right hand as you twist the back of your left hand over and toward the ground. You want to maintain the flat left wrist all the way through impact and into the follow-through.
Note: there is no real sense of a "timing issue" with the wedding ring up swivel. If you are timing something, then you are usually timing the flip.