Help ripping a sheet metal cone with a helix

One way was using a helix to "swept cut" and the other was cutting a flat pattern

Also how do I align the helix starting with sketch 1 circle and ending on sketch 2 circle with 1/4 twist?

PS you'll notice a gap in my revolve, it's the only way SW will create a flat pattern. I had 360* when doing the helix cut.

I've tried this a few ways but no luck.

SolidworksSheet Metal