deca dick is because your hormonal system is shut down because of the added hormone. Whne using test, although your hormonal system is shut down you still have test in your body, where with deca you'll have no test when using it alone.

At the doses you want to take I still stand by my first post, do a test only cycle at 400-500mg a week for 10 weeks. Start pct 2 weeks after last shot

JohnnyB