Thank you for your reply, For your art , you bought one of the best cameras ever made and using 3 year expired foma and efke. I dont know if water spots could be cleaned with rewash but try it. And rescan the above photograph. Its a half hour business. I have a Rollei 35 S and it has the collection of every kind of mulfunction , lens oil , dirt , not working slow speeds etc. I wish your camera have any of lens problems.
And for good sake , use Kodak or Ilford film fresh. I suspect Rodinal long development could not be good for cheap expired film .
I dont think but cant be sure , that you have a lens problem. Buy a good film , put camera to safe place and shot many highlight pictures .
Best way and fastest way to be sure , use a good store lab and color negative film. Try with Kodak Ektar , its a high contrast film and reveal all lens spot at your camera.

Good , really good luck.