FiTech EFI system

Tanks Inc. LS9904-KIT. $71 at Summit. Get the kit it comes with the fittings, I connect to AN6 after that. Mounted it right over the diff. (the engine side isn't connected yet in the pic) LarryView attachment 1715146917
Those of you running this filter/regulator, why does the outlet fitting move in and out once pushed in? It doesn't seem right, and it allows it to move side to side. Should it be pushed in and secured somehow?