My first attempt to get them in was the threaded rod method, I was standing above
the springs & screwing the nut when the sliding part let go...
The top spring shot out at an amazing speed between my legs hitting the shed roof..
Almost taking the family jewels with it...
I decided not to risk them again so tried Muskys method of brute force on the 2nd attempt
& they slipped straight in.. ( the springs I mean )