Other notes: Its very, very hard for me to focus color negatives. Very nearly impossible. Even wide open with no filters, I could barely make out any grain. Do I need to get my eyes checked?
Ektar grain is extremely fine. I can't see it either with my Peak grain focuser. I can just barely start to see it when I enlarge my 8x10's to 30x40 prints but even then I just focus on edges and lines in the image for sharpness rather than the grain itself.
Glad to hear you had a great start with RA-4. With today's materials you can create amazing results from color negatives.