Thanks for your replies gentlemen.
The streaks run from top to bottom (the short side oriented vertically).
I cant see any difference between seeing the steaks with the emulsion side facing me and with it turned the other way. The streaks are visible from both ends and with the same intensity.
It could be that my presoak techniques is completely wrong or for my procedures I should do it longer. I put distilled water in the caps and then I just roll the tube as I do when developing, for about 3 mins. Maybe I should continue for another 2 as I am using less water than what you have described.