, "Sweep" is jargon I've picked up from reading about display calibration. It just means to measure a sequence of standardized images. You've already done grayscale and primary/secondary sweeps. The AVSHD709 disk has saturation pattern images for 0, 25, 50, 75, and 100% saturation. I don't have the disk with me, but from the MP4 version they are located in the folder MP4-2c\ColorHCFR Windows\Saturation. Measure them as I described in the response I posted yesterday.
As for doing a 75% saturation cal, this link is a good reference to learn one way to do so: Epson Calibration Guide! (1080, 1080UB, 6100, 6500UB, 7500UB)
This method requires use of the spreadsheet stereomandan has linked in the thread to calculate your x, y, and Y targtes. I've used it many times, and it works well. You can also use the Rec709 75%/75% color space and HCFR will calculate the targets for you. You can set this color space under Advanced\Preferences and look on the References tab for "Standard" and select HDTV-Rec709 (75%/75%). Only use the 75% space for making adjustments...return the S/W back to the HDTV-Rec709 before you run another set of sweeps.
Your RGB balance looks pretty good. You should be able to dial that 100% point's dE down to 3 or below and then it will be very good. My recommendation is to get 100% balanced and then work the rest of the gamma curve around that. Sharp's CMS for the 100% white point only move in one direction whereas they move +/- for the remaining points (which is why I recommend starting with the 100% point).
To dial in your colors, you should be using hue, saturation, and value. Value is the same as luminance. First dial in hue then saturation then value. They all affect one another, so you'll probably have to go back and adjust hue once you're done getting the luminance set...and so on. .....it's an iterative process.
Now, with all of that being said, Sharp's Aquos technology has an issue with saturation tracking (cyan appears to be the worst offender) and I can tell you from experience that using a 75% calibration will yield far better looking images than with 100%. I'm still trying to overcome the particularly bad tracking my Sharp has and will be posting up questions on this board soon.
Hopefully others will chime in and give their inputs as well.