I'm wondering what the reason is behind taking moderate to high doses of testosterone and ending up with high test levels but not necessarily high free test levels. For the first 2 months of this cycle I had a super high sex drive as is normal for taking test cyp but now all of a sudden during the last month I have added MENT on top of test and haven't had really any sex drive in a while. I feel that I have either crashed my estrogen by adding letrozole in due to taking MENT or my testosterone is just binding to SHBG. I also don't think I'm gaining muscle and strength as fast as I used to despite now taking a stronger compound. Any ideas?