Lukas,
Many thanks for the Edit options, works well.
The air comp is reasonably heavy, ( quite heavy for an old joker like myself !! ), but the main problem is getting two rotten little spacers to sit there while getting a stud, !!! any stud !! to line up & screw in.
I used silica as a temporary measure ( let it set over night ), to hold the spacers in place.
When the good lady had it at the right height, she tied the rope off to the car port column, & left me to it.
As they say in the classics, " the rest is history ",...2 & a half days to remove, but about 2 hours to replace.
The tools that I had to manufacture to get it off, helped no end.
Regards,
Alex