My experience is similar to yours. I ran 1:1 Test/Primo at 500mg of each last year and my libido was low, but I hade minor gyno symptoms, so I did not know what was going on. I managed to get a sensitive E2 test, and my E2 was about 2x the highest number the reference range and I was not using an AI
At the moment I am taking 500mg Test/week and 500mg EQ/week with no AI.
My libido is great, mood is fine, no gyno symptoms and joints feel fine. So I assume my e2 must be in a good range. I am in Canada, so getting a sensitive E2 test is very hard.
I wonder if I can run EQ slightly higher than test and be okay.