Hello Kickflip,
If you set the LFO phase to a low value it will run in free more. This is usefull for some sounds, especially in polyphonic more.
Solution1: If you press shift while you click and move your mouse you can finetune the knobs for a more precise setting.
Solution2: In the mod matrix do not use a postive, but a negative send level of the LFO to FM1. Then set the lfo phase to 180 to 200 instead of 0 to 20. Since the LFO shape is symmetrical it will result in the desired sound.
Best Regards,
Markus