So why do you say you cannot handle higher levels of testosterone. You believe it is because when you went through puberty you had low levels of testosterone to begin with?
I "handled" higher levels for some years, but came to realize the harm they caused was outweighing the good. I loved the boost in athleticism, but the persistent headaches along with impaired libido and sexual function pushed me to keep experimenting. I would guess I had normal testosterone through life until hypogonadism hit in my 50s. What guys like you downplay is that even a TT of 800 ng/dL is unnaturally high for most men, especially when that level is constant 24/7. If my healthy youthful levels entailed a daily peak of 600 ng/dL, then that is not low, but average.
You are now studiously silent on your claim that lower levels didn't work for you. Are they true or a confabulation?
When it did first started I did have lower numbers and they did not work for me as I'm sure you know.