Agree with the above. Most people don't even mess w/prami, bromo or caber on deca alone. Then again, most sensible people don't run Deca that high either. Sure, it increases progesterone by raising prolactin levels but not enough to cause progesterone related gyno 'for most' on a moderate dose (450mgs/wk).
Deca is a progestin but Tren tends to send prolactin levels through the roof. I personally think the gyno is estrogen related from the dbol or test e. Letro is too strong. Why not start with some like arimidex and nolva until the symptoms subside? Dropping dbol was a good start.