BL Heli 32 Low Kv motor settings

Does anyone know why the Throttle stick at 1866, the drone still did not lift a mm? drone weight is 1.7 Kg, and each arm is 425g, 4S power.

Do I need to up the Thrust Expo or Thrust hover value for Stabilize flight mode?
looks like I need to up the Thrust Expo towards 0.99 same as MN2806.

T-Motor MN4004 KV300
ESC configuration.
Log file.

MOT_THST_EXPO,0.69
MOT_THST_HOVER,0.2
RC3_DZ,30
RC3_MAX,1901
RC3_MIN,1101

[Edit]

with a 15" propeller under a 4S battery, the max thrust is only 592g, 13" propeller my guess is it is likely to be 392g. So under the 4S battery, the anti-gravity Motor becomes a rock.
392*4/2.4 = 653g max hover thrust.
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