I have bought a new hobbywing 120A for my T3 and put my 60A in my X6-2. After I got home I noticed I got a 2.1 version and also that the caps are not wrapped with shrink tubing and are just soldered on a small circuit board with no protection. After my first 5 min run I changed my battery and the caps where smelling badly. I touched one to check the temp and than there whas smoke and a lot more burn smell. The esc still works without issues but if I dare touche A caps It starts smelling and makes a sound like there is a short circuit. So I would recommend everybody to put some heat shrink over there caps. Still would be better if hobbywing would do that before selling them (don't know if every 120A version 2.1 is sold without heat shrink).to be on the safe side I will order some new caps and replace them