Clean the hell our of your reels. Really. Make sure they are COMPLETELY dry before you load them, always. Sacrifice an unexposed roll (or one of these damaged rolls) and practice loading them again. Make certain everything looks right. Use a flashlight and check to see the rolls are not touching. As mentioned, check for burs on your reels as well as your 35mm camera and your 120 back.
It looks like you've got a couple issues going on here. Stop developing film from your trip. Photograph something you don't care about and get things worked out with that film before you start working on your important film again. This last part is the most important. Trust me. I've been there and I understand....
I have been washing the reels with every time after processing. Maybe not enough it seems.
Keep the faith, man! You'll get it figured out. Just keep ruling out variables one at a time.
I've been using Edwal LFN for a few decades, never any issues. I switched from photoflo because it was gumming my reels unless I scrubbed them after use. My formula is two drops LFN per liter distilled water, plus one capfull 91% isopropyl alcohol to speed drying. I also shake excess rinse from reel before hanging film to dry, no spotting or streaks ever.
Now for the question that I hate to ask because I think I already know the answer. But is there anything that can be done a bout the marks after the fact or is it a done deal? I am talking about the streaks not the edges. I already know what that is from.
I'm going to vote for your squeegee technique causing these streaks. It's way too consistent to be a development problem,or caused by the reels - issues with contamination from unwashed Photo-Flo would look more like the swirly bubbles on the edge of the roll than uniform vertical streaks running parallel to the long axis of the roll.
Some times, just some oils from your nose on a scratch(emulsion side) can hide it good enough for small prints.
Thanks. I am using a diffusion enlarger head so I don't feel too terrible at the moment. These are the most affected. I remember last semester I had some scratched negatives. I printed them at school on a condenser enlarger. They looked awful. Later I printed them at home on my enlarger and most of the scratches didn't show up