@Shroud
I KIND-OF see your point about the frame distortion and new more stringer frames,, but uneven stress is still there
but, and this is a big "but" = its your racquet! so its ok. I experiment with my stuff all the time
I do like seing you trying big differentials and such, its good to have people try different stuff
1 thing, I don't have a lot of experience with Kevlar, so this could be something different you are seeing, since you do use it a lot more and have more experience with it,,
these are my experiences with polys, synthetics, multis and some nat.gut,,
I have tried just restringing half the racquet before, as a personal experiment and being a bit cheap and trying to save some of the string job
the string that stayed on the frame, was LOOSE!!, very loose, no tension on it at all, maybe I played with it too long and it stretched out too much?!,; but at the time I felt like removing the knot and re-tensioning would have caused more issues for the following problems:
1 the knots would have worn out and provably snapped in those places while retying or during play,
2 the length of string needed would have been "too short ", even with "bridging",,
sooo I decided to trudge-on and finish the string job; ime, the tension for the already installed string, "did not come back", in-fact it stayed loose
I had to straighten the string every time while playing, not good
I also snapped the string while playing, soon after, when I re-used a poly string; I guess the poly got stressed too much at both restringing times and created a bad spot for little pressure to break it, (I don't snap strings normally),,
my conclusion on this experiment, 4ME!!!,
it was not worth the time invested and/or the uncertainty of the reused string failing, while re-stringing or while playing.
I rather buy a cheaper string and restring more often!
BTW if you goal is to use the cross string as your main string the 2nd time around!?, your gonna be short!!, by 2x mains
if you wanna use the mains as your crosses next time?!, its gonna be tight in length, not much room for error, but also remember that the mains get stress the most, so condition of the string is a big factor the 2nd time arround