It looks like the tilt is pretty uniform along the X axis. That can be caused by a skewed gantry. Fortunately, since the ACE has independent stepper motor drivers for the left and right Z lead screw, Klipper can automatically tram the gantry with respect to the bed.
Home the printer, run a Z_TILT_ADJUST command, then home Z again and take a new mesh. If it looks better (or at least not tilted left to right like that), then gantry skew was likely the issue.
Note that Sovol’s first-time calibration does a Z tilt adjust, but the gantry can get a little out of sync every time the stepper motors shut off. It’s quick, so I added a Z_TILT_ADJUST command to my START_PRINT macro. Now it happens automatically before every print. 