CW had the spring in stock...I replaced it and put everything back together.
I installed the new spring - gave it 23 turns and got the bracket back in place with only 2 little scratches around the bracket mount area
When I then put the outer brackets in place and rolled it up and down a couple times - all was good. When in the window awning position and below - the spring felt strong (like hold on to the strap else it will slam against the slide).
I then put the cover on with the ~5 screws on the brackets on each end. After putting the cover on - when it is in the down position which covers the windows, there is hardly any spring tension. Then, push it up a little and it gets close to the slide wall - the spring tension is good - like before I put the cover on. I don't understand how this can be?
What am I missing?