I may have been very stupid. My set up was going to have a bay res/pump, going into a CPU block going into a rad at the top of the case. I have just seen a video that said your fill point must be the highest point, I do not have a fitting to connect pipe to the port to make the funnel higher than the rad. I assumed that as long as I filled the res it would pump up into the rad, Do i need to go and buy more fittings?