senfu block mod

I recently cleaned my senfu block out (it collects alot of white crusty stuff between the fins) anyway for those of you that are unfortunate enough like myself to have this block I came up w/ a mod that will give it better water flow. On each side of the block is the "fitting" for the hose if you look inside the fitting there is lines of plastic which cause resistance. What i did was found a drillbit that fit perfectly inside the fitting hole and drilled out those lines of plasic. Temps went from 52ºC to 45ºC then again i also moved my rad outside of my case so that could be a reason too.