My DHEA-S is as well very high, 1,5 times more than normal, as well.
The only thing which can help eleminating adrenal androgen precursors is supplementing Resveratrol (500-1000mg).
The other thing is Abiraterone Acetate, a drug stoping the ACTH signaling to produce DHEA-S through the adrenal gland, used for resistant prostate cancer. This is too harsh for us.
Bicalutamide is a great option, but yes, Spironolactone as well, because it essentially blocks Androsterone, urinating it off your body. Androsterone is essential I think for creating alternate DHT in certain tissues, like skin/follicle. (See graphic is posted earlier.)
Why can't you take Dutasteride?