i primed the oil pump and i got pressure on my gauge, now when i drop the distrubuter in, it won't go all the way down, it meshes with the cam and goes into the oil pump driveshaft but it still sits up about 1/4 inch. could the driveshaft be in upside down? i had the motor assembled so i didn't put it on and i didn't really look at it cause i assumed it would be right. i looked at my old motor and the drive shaft looks like it has a pointed end on the top when you look down the hole, but on the new motor it its not pointed on the top.