I'm having an issue getting a a smooth loft from an offset rectangle to a spline that is drawn similar to a semi circle. The left side of the loft (see attached) is exactly what I'm looking for, however the right is twisting(see attached). I'd rather the two twisted yellow lines of the loft meet at one corner where the "semi circle" meets the flat line, but it offsets for some reason. How can I correct this? Adding guide curves doesn't seem to take care of it, at least not the way I am doing it.
File?