AutoCAD Civil 3D :: Edit Parcel Curve

I don't have much experience with parcels. We don't subdivide property. But I have to do some Acquisition maps and this is the first time I've had an opportunity to do them in Civil 3D.

I wont get in to the gory detail, but I created some parcels that were very slightly off for rotation. It turned out there were some distance problems too. I thought I would just rotate the parcel based on a couple of known corners and then snap to corners I had from a drawing in the correct system.

Mostly that worked. But now I have a curve that isn't tangent because the far end of one of the tangents was adjusted. Also, somehow, the radius is off. I'm only talking about a couple of thousands of a foot, but I'd like to make it right since it has to be edited anyway. I've tried the parcel editing tools from the ribbon and read some of the sections in help that I thought might apply. I haven't been able to adjust the curve.

So now after all the warm-up, my questions. Can I just erase that curve and use the parcel creation tools to add a new curve? Will that curve automatically be added to the correct parcel? Is there anyway to modify the existing curve to be tangent to the revised lines? IOW What's the best way to proceed?