I don't think it was temp...when I played today it was sunny at almost 70 degrees. When I was playing early in the week at night (50-55 degrees, no sun obviously) there was no free power from my 65/42 setup. But I get your point and agree...if it was 80+ out, would likely be a considerably livelier stringbed.
Never heard of anyone using stringsavers with Kev/ZXP, although I do recall someone (
@Shroud?) maybe using it with Kev/syn gut with the intention of locking up the stringbed. I personally wouldn't even think about it. Let the Kevlar breaks when it breaks and until that point allow as much main movement and snapback as possible.