u/No_Help_8949

Is this normal?

I removed lower grouphead pieces (showerscreen, screw, jetbreaker, and shower holder diffuser; gasket in place)

One more question, I’m replacing the old jetbreaker for a countersunk one to fit the new countersunk screw and screen. Does the length of the countersunk screw being ~2mm shorter than the stock hex screw matter?

All pieces are Rancilio-made.