I took the time this morning to read through the other threads about the SS. Some good information for sure. Sugarbaker should get a prize.
I'm intrigued with the questions about tuning and tweaking the SS as those who know me know I'm always changing and testing something.
I've been out for three short sessions now. It's cold out there!
The little bit I've tweaked the bridle let's me know it's already in the right spot with David's settings. Going up with the TP quickly kills the feedback and drive. There may be some drive gain on the UL by dropping the TP but the Std doesn't seem to need it. There is no appreciable oversteer so you could go in some though I'm not sure the point as I don't like oversteer on bigger kites.
The upper spreader is interesting as none of my other kites pull in the leading edges as does the SS. I currently have four USs in the bag; the original spec and three more each 1/2" longer in succession. That's right, a full 1.5" difference shortest to longest. The SS is quite tolerant of this. The shortest US gives the most accessible tricking, the widest wind range and the least acceleration.
Longer USs lower and narrow the wind range, tighten the spin radius somewhat, grabs the wind more aggressively which loads the sail more quickly. Tricks are still there but you have to be more deliberate. If you fly in low winds a lot you might give this a try. Will play with the USs on the UL when that is finished.
Some older designs used to ship with different length USs to tailor the wind range and kite feel.
Overall the SS feels like a kite to just fly rather than tweak.