Ladies and gents! since a week ago i am a proud owner of a Line 6 Helix! but when i was fiddling around with the internal routing, i noticed that the first and third return are not functioning, the 2nd and 4th are working (i tested this by playing music with my phone through a mini-jack -> 6,3 adapter.) Is my hardware faulty? or is it a internal/software setting that must be adjusted? i hope you guys can help me out with this issue! with best regards, Milton