Ah, ok, easy enough then
Every rocker setup I have done always has "loose" rockers like that, I would not worry about that. Steel bodied roller rockers will always be noisier, so you may be overthinking. But thats assuming the noise is consistent and not localized to one area.
How much preload did you go with and how did you go about doing it?
Rocker sweep look centered both laterally and axially on valve stem?
No binding on guideplates? Side to side, or depth