Sub37 LFO 2 problem

Hello,

I have an issue with my Moog Sub37.

The Lfo 1 modulate the Lfo 2 rate without any mapping… any one have the same problem?

When I slightly push the lfo 2 button it goes back to his own rate until I hold off, then it get back to be controlled by the lfo 1.

I re-initialised the moog, checked all the mapping (with the control knob) for both lfo. I also opened the moog to see if there was any suspect thing or dust in the way, nothing…

Any help pls?