On further research I see how the water pump is mounted and sealed. I cannot see how the weep leakage passes from the water pump shaft to the outside of the block. But if you are getting flow from the weep hole and coolant in the crankcase the most likely problem is a misplaced or broken seal of the water pump to the block. You are going to have to go back in and see what is wrong. This time before you reassemble the front of the engine see if you can pressurize the cooling system and see if it is air tight before you go further. You should be able to tell if you are getting air out of the weep hole or past the water pump to block seal.
Let us know what you find. We are learning here.