18.0

Tutorial 29
www.magix.com
 Select the "Draw wave shape" mode.
The mouse pointer turns into a pen that you can use to draw
directly into the waveform. If you click, the zoom level increases
automatically and you can draw.
It's about trying to turn the flat form a bit more into a peak and
moving it slightly towards the bottom.
This way, for example:
The critical section should then look like this at the end:
If you play back the material now, the cracks have disappeared.