Another pulley problem/resolving

Hey, another question whereby i don't get how my method gets the wrong answer.... solution is herehttp://clip2net.com/s/VKcK, question is here:part 1 and question i need help with

tension in the string is 6g, where g=9.8, sin theta is 3/5.

I resolve tension from the left so that i get R= T(0.6) + T , because one tension is sloped (therefore needs verticall resolved) and one is already completely downward, right?

I don't understand why the mark scheme suggests that the vertically resolved downward compenent X2 is the force acting down, can someone please explain this to me?