Mackie 1202 VLZ4 : AUX/SEND to stereo pedals?

[PofM]

It isn’t the first time I’ve seen it discussed, not even on this site.

Mono/stereo signal leans a little to the L

Wehn I have a one channel panned center sent through my Mackie 802 VLZ4 or ADA8k into my Babyface my vector scope is showing that it’s an average of 0.4db louder in the left. Same thing when I play a waveform sample on my OT and the Amp bal is 0. As I have lots of things going in my mixes are always louder in the left. Is this something I should be concerned about or a natural occurrence and it’s up to me to balance appropriately?

Why is the Mixer doing this but the OT doesn't

Hi, I’m running my Vermona DRM3 into my Mackie 1202 VLZ4 then on into my OT inputs. When doing so, I’ve noticed that the levels indicator on my Allen and Heath DB4 show up lopsided. However, when I run the DRM straight into the OT, the levels are equal for both L and R. I’ve included the photos from the levels below. Last photo is when running directly into Octatrack. [IMG_20190712_175613] [IMG_20190712_175607] [IMG_20190712_175652]

Mackie 1202VLZ4 suffering from loss of balance - Gearspace

Mackie 1202 VLZ4 mix output misbalance - Gearspace