When I installed mine last year I made sure all of them were opened a few were not drilled correctly and I had to get new ones also. I did install mine at 3-9 o'clock and 1-2 still, last year wouldnt take grease.
I do remeber somewhere someone had said that if they dont take grease to jack up on the frame to reduce the pressure on the shackles and then they should take grease. It could be like others had said that there is just alot of pressure on that part of the bolt where the grease squeezes out.
Brian, Tamara, Abigail
2003 Lincoln Navigator Ultimate Edition 4X4
2004 Crossroads Cruiser CT30RL