Is anything wrong with my grouphead? [Turin Legato v2]

Ever since getting my Timemore 078s I’ve had insane channeling. I understand that it probably needs to be seasoned, but in the same instant I feel like my grouphead might be goofing. Is it supposed to come to one solid stream without the portafilter in? Or does it only do that when the portafilter is in? I’ve have not been able to use a bottomless with the 078 due to how much channeling there is, and I hate that I can’t see how my shots look with the spouted, or can’t see if I’m under extracting due to half the puck not being saturated.