Two notes in scale have no tone.

[Holiday101]

This is a weird issue. Bb below C1 and F above C2 both have little to no tone. I ran up and down my Midi keyboard and all the notes sound fine except for those two which are significantly weak. I did a note calibration to no effect. I'm thinking it may be a hardware issue.

[DonutDude]

I assume you checked your midi keyboard with another synth to verify it isn't the keys on your keyboard.

[Holiday101]

Yep, checked with another keyboard. The next morning though I powered it up and I cannot reproduce the issue. The issue was present after the unit being on for a number of hours so I'm wondering if it might be some stability issue at proper temp or after the unit has been on for awhile. At any rate whatever it was doesn't seem to happening as of now. Will see what happens after a few more hours.