Buckskin, I have a Craftsman whose center zerk cannot be seen, only felt. I clean it and grease it with a regular pump handle grease gun and flex hose attachment from the left side on one knee. The hose fitting is guided on vertical with the left hand while the right hand pushes down the handle which has been cocked. It's a bitch , but improves with practice. Make sure you are square on the zerk-no grease out side zerk. I feel your pain and mess.:laughing: