OP-1 Parameters moving on their own in effects / mixer

Hello everyone! So I recently purchased an OP-1, used unfortunately, and I love it, but sometimes when I apply an effect the parameters sometimes start moving on their own. Has anyone else had this happen and if so what have you done to fix it?

You should look at T4 / LFO screen.

What should I look for?

Likely an LFO is set to modulate one of the FX parameters. On the T4 screen, you’ll see “FX” as a setting, and another one of the settings has four colored dots–this is to select which parameter is affected.

Ha! Thanks. Virginal OP-1 user here. But seriously thanks for filling me in!