May be, like I said, they were snug fit. I had cleaned the recessed Zerks from grease and contaminant before I greased them. It sucks that they couldn't fit on yours. It was so easy to grease my tractor Thursday, it was almost child's play. Push the tab, push the L&L in, let go the tab, pump, push the tab, pull the L&L. The only ones that gave me trouble where two of the loader's bucket recessed Zerks (same one on each side). The L&L inserted well but couldn't push the grease in (the L&L didn't disconnect, which is good). Had to raised the bucket, then they were easy to grease.