3d Printer PID tuning

In first work problems, my 3d printer needs tuning after some surface changes in my print bed. It is acting drunk right now when it tries to keep a steady temperature:

Heater

Recv: PID Autotune finished! Put the last Kp, Ki and Kd constants from below into Configuration.h

Recv: #define DEFAULT_Kp 18.74

Recv: #define DEFAULT_Ki 1.53

Recv: #define DEFAULT_Kd 57.31

Recv: ok

Bed

Recv: PID Autotune finished! Put the last Kp, Ki and Kd constants from below into Configuration.h

Recv: #define DEFAULT_bedKp 43.15

Recv: #define DEFAULT_bedKi 2.18

Recv: #define DEFAULT_bedKd 570.37