Many of these lose air. Folks get upset with them. I learned something this year. The actual zerk where air is put in is screwed in. A) the threads on that zerk device on SOME of these units was put in at a slight crossthread, and it loses air that way. Take all air out, take it out, put on teflon tape and put it in correctly........and B) the pin inside the zerk (the one that you push to let air in and out, the tiny protrusion, I'm sure it has a name ??) is sometimes not 'set' correct. Again, let all air out and fiddle with it to ensure it's straight up and down, and reput in air.
I have NOT TRIED this, but heard it from more than one source.
"Next to prayer, fishing is the most personal relationship of man"Calvin Coolidge
"American by Birth, Southern by the Grace of God"Lewis Grizzard
2016 GMC Denali 3500Dually--2017 CC 36CKTS