No I wasn't joking I just didn't read the original post again been a long day!
Sorry! Anyway after reading your post AGAIN like I should of! Its either the plunger at the bottom or the screw at the back of brass fitting is slipping on the rod that pulls the rod up! I'm gonna say its the plunger. I went to TSC and got a repair kit for mine for like $17 I think. It came with everything plunger seals etc. Use 2 pipe wrenches when taking the hydrant off the pipe! And no I'm not kidding I've seen the leak that bad!!! Hope it helps sorry for giving U a heart attack reading my last post!

