Changed to M5 Rod, and hearing grinding noise while move z axis from lcd

HI All,

i was usinf lead screw and changed back to M5 rod bcoz of some reason.

i changes the steps per mm to 4000.

but when i try to move z axis from LCD, getting some grining noise

here is my homing speed

#define DEFAULT_MAX_FEEDRATE { 150, 150, 5, 25 }

#define DEFAULT_MAX_ACCELERATION { 2000, 2000, 100, 10000 }

#define DEFAULT_ACCELERATION 2000 // X, Y, Z and E acceleration for printing moves
#define DEFAULT_RETRACT_ACCELERATION 2000 // E acceleration for retracts
#define DEFAULT_TRAVEL_ACCELERATION 2000 // X, Y, Z acceleration for travel (non printing) moves

#define HOMING_FEEDRATE_Z (2.5*60)

Please help me to fix this.

Regards,
Ben

#define DEFAULT_MAX_FEEDRATE { 150, 150, 5, 25 } 5 is far to fast for m5 use 3 or 2

OK,

thanks for your response, i will change and update you