Did you try to add weight to MP?It's quite unstable, it might be the string. I hit with MP a couple of times and had to give it up. then tried my friend's pro, it was so much more stable. Reason I want to try S is the larger head size and thicker beam
I tried it yesterday vs an opponent that was also trying a new racquet, and either way is somewhat slower than me in court movement, less stability in shots, so couldn't put much pressure on me as well with the usual frame.
Launch angle is of course higher, due to 16x20 vs 18x20. Finding depth was much easier than with Tour.
But the 10g less weight made miracles. Mostly negative miracles.
Even at low / moderate speeds, at times I could feel that the racket lacks stability.
From the BH wing, 2HBH, it felt like a feather, and a few times I had to literally look that I still hold the racket in my hands.
On the positive side.
Access to spin and depths seems to be fine.
Tried to help my opponent and miss a few shots, but couldn't, they all landed inside the court.
Was relatively easy to choose between flat-ish shots and top spin shots.
I am thinking now if adding weight could solve the stability issues.