this ^^... i am running tren right now, enth 400 mg a week, and my joints are taking a beating. the other day i felt like an 80 year old man trying to get some 70 lb dumbbells up for shoulder press... i had to take a few days off and get joint supps it was so bad...
I would bet you could run a light dose of deca with a normal/high dose of tren and be fine, as long as you were running a test base, like that other dude said, and were taking something to keep DHT high, like proviron, or topical test applied to the balls, which converts to DHT at a very high rate, to keep libido issues in check and to counteract and prevent alot of the progestin-related sides. In fact, i would venture to say that taking care of the DHT portion of the equation would be more important even than having caber, although i would definitely get caber too!! but high DHT will prevent high prolactin, as well as high estro, it just prevents female hormones in general from getting out of hand, strongly reccomend.