LFO Rate Operation

For whatever reason, I cannot get the LFO Rate knob to make any kind of affect/difference.
The blue plus light does change speed but that’s all.
The manual isn’t much help here.
And the LFO SYNC is set to OFF/SYNC.
Frustrating day so far. Any help would be appreciated.
Thank you.
EDIT: I noticed that on certain presets (like Clean Machine) it does operate normally.

Have you tried adjusting the Mod Wheel Amount control on the patches that don’t seem to respond?

Yep. That did it. I had the Mod Wheel on zero. Duh.
That cured about 99% of the patches that did respond. They’re a couple that I really can’t tell if anything is happening since they’re kind of bizarre sounding anyway,

Thanks much