I was quite upset that I couldn’t fine tune the oscillators on the Digitakt but there’s a simple workaround for it .
In the LFO section, set the DEST to Pitch All, Set the wave to EXP, turn the speed down all the way to .01, BPM to 1, and MODE to RETRIG. Then you can adjust the fine tuning of the track with the Depth parameter.
Basically your creating a pitch envelope every retrigger but you set the LFO so slow that it doesnt sweep down and keeps the note constant.
Hope it helps