Wot I meant was that the hole where the grease comes out only just touches the top of the nipple when the nozzle touches the yokes and won't go over the nipple. The outer barrel, that screws up and down and adjusts the size of the collet that grips the nipple, comes off. So I can take it off and machine a chamfer on the front and reduce the diameter and hopefully it will go between the yokes of the UJ's and further onto the nipple.