When I had a hyper 7 a few years ago when I first got into R/C, I had an Airtronics 94357 (which is the same specs as the 360, just without the heatsink case) in it, and it seemed to handle the torque of high-speed turns just fine. I do have a 94358 in the pitbox as my back-up servo, and it has the same specs as a 359 (no heatsink case), so I could put it in and try it, I suppose. I just really like the speed of the 360 now, and going to something slower will seem pretty sluggish...lol, but if it takes care of this last handling hurdle, it would be worth it. I'll swap them out this week and try the 358 this weekend and let ya know how it went.
Thanks, Brad