Thanks for info on venting. Years of use and never knew that.
Amazing how many don't, it's not exactly something you go looking for. Next time your greasing pump up some pressure and feel the resistance to moving the gun angle on the nipple, open the top bleed screw and see how easy it moves. The line pressure closes the collets in the connector around the nipple so when you have seen the parts its logical really.
I have been in this game over 50 years and still learn, it's a bad day when something new isn't picked up.
