I did this combo and to be honest i didn't get much out of it. It was disappointing. For me the Masteron mitigated all the good effects of Primo, i ended up being extremely shredded but very flat all the time. And also my libido wasn't as good as on test/masteron only. And i didn't get this ON feeling that i have with Test/Masteron only. Test/Masteron only i had a sense of wellbeing, i was calm and confident, but with more DHT on top it wasn't there.
I think it was too much DHT in the system, it got out of balance. When i run test/primo i look much fuller and better than this combo. In my opinion, 2 DHT's don't mix well.
It's better to keep it Test/DHT + GH or Test/DHT/19nor + GH
Add NPP to the mix or keep Test/Mast in my honest opinion.