no it leaked inside the lid, it spread out from the contact area to those line of pins that are close by........a much denser paste wont spread out.
i've also noticed that Liquid pro stuff...........on the carpet! and on the wall behind my workbench


, when you compress it, it tends to spit out to the sides, because it did this really badly on the 7970 GPU cooler cover
https://www.overclockers.co.uk/showproduct.php?prodid=TH-013-CL
i would personally just make sure that the CPU has a mild overclock and a standard high quality cooler, i'd get your performance from the GPU and MOBO only, otherwise you'll loose your RMA.
finally i think the 4790 is a far better than the 4770 anyway, it uses much less power and runs cooler