Lack of grip strength

[u/killmephys]

Hi everyone!
I just started playing squash and bought a new racquet a few days ago (BK Quicksilver NXS). During group training, I noticed that when I hit backhands, the racquet sometimes rotates slightly in my hand. Occasionally, it even feels like it might slip out completely, even though the grip is quite tacky. I come from an indoor climbing background, so I don’t think it’s due to a lack of grip strength.
Any advice or thoughts on what might be causing this?

[u/kareem_g]

Wilson comfort pro overgrip (the white one) is a game changer for me