I have my v2000 set up almost like that with the res where you have it, what i do is flip the case onto the roof so the res fills up with water, then just unscrew the top so all the liquid leaves the loop, better yet take a spare barb and some extra tubing and attach it to the top of that ek res it makes it easier to route the water into a bucket or something. Also I always re apply thermal compound to the cpu anytime i remove it, but make sure you clean all the residue off for proper contact.