YPTS is great for a match. I also cross it with Silverstring. However, after a match or so, the spin is just not there anymore. I stick with it as it's taming the power a bit, being a stiff string.
The frame is really powerful. If I'm in good shape that day, I can hit amazing shots with the TC and will keep the opponent in defence most of the time.
But if I'm a tad off that day, then it's a pain keeping the ball in play.
Maybe cutting the racquet back to standard length will decrease the SW.
I have no idea how much I can shave off from losing 0.5" in length. But indeed, 378sw is a bit much. I had no clue I'll end up this way with the final setup