Free T is usually 1.5% - 2.5%. If we knew his SHBG we could most likely, quite accurately calculate it since we do know his albumin. Example: if his SHBG were 65 (very high) his Free T would be calculated at 5.88 ng/dl, or 1.25%. If SHBG were 15 (very low) Free T would be calculated at 12.9 ng/dl, or 2.75%.
Up to 40% of bound T is loosely bound to albumin and can be easily dissociated and made readily available for uptake.
His FSH and LH are also smack-dab in the middle of the normal range. Nothing wrong there.
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OP - it appears as though you never ran an AI or SERM during your cycles. Is this the case? Why? If so, no wonder.
Also, you need to learn how to eat and lift for max gains as an ecto before you go on any more cycles. At 6'4" you could have easily gotten to 185 lbs without AAS. Any medical issues why reaching 185 natty would not have been possible?
Bottom line is you have gyno. Start your letro. How much? Well...how bad is your gyno? If it's really bad you can start at 2.5mg/day and lower the dose as symptoms subside. If it's not that bad and you want to save your joints and libido, you can go slow and steady at 0.5mg - 1.0mg/day. Monitor as you go along and once gyno disappears you should probably switch to aromasin at 12.5 EOD or E3D for a while.