Step
I'll try to be more helpful this time, I always had trouble with/reading Ruben's posts until he changed his avtar from a cement mixer rescently.
After being troubled by water marks for 50 years or so, moving house to softer water area and still having marks, always wiping file between 1st and 2nd finger, using recommended wetting agent in final wash, etc. I bought some distilled water.
But I first tried a film wiping squeegee tool that had been in my junk box for nearly as long interval, with x10 drops of photo wetting agent rather then the one drop recommended.
Hung up to dry in bathroom overnight, looked in to check progress after a few hours, no marks, no scratches and totally dry film, apart from water in bottom film weight/clip (cloths pin/peg), relevation like on road to Damascus.
All I do now is scrub wiping blades with a nail brish and rinse in the film wash up water, before use.
The distilled water was relegated for 'steam smoothing iron' use, don't know 'US/English' for this. Borrow a film squeegee from someone, if you are really poor, use it once and you will buy one for next film.
Noel