Ahh, but your query gave rise to my interest so thanks for that.
Here's a pic of my spring. Kite was new for my wife last Christmas but cannot vouch for how old it is model-wise. It may have been old stock at my vendor...?
Kite is labelled as a 'Rev 1.5 Classic' fwiw -- Reflex as can be seen.
Hope this works:
My original Reflex (pictured above and here) was one of the Earlier runs run. They may have made modifications later. When I sold mine the new owner noticed one of the vinyl "sleeves" I placed on it had split and did the pictured work. Except for the "black sleeve in the pic above., this is how the earlier runs of Reflex kites came fitted.
Stock configuration (Prior to the mod) is pictured here
FWIW, I was an early adopter, Mine was also an early secondary market item.. It wasn't for me. The float isn't what I was looking for.
My first review of this kite
And documentation on the Mod by @SHBKF
But the spring has been (re)attached - or reinforced - with heat shrink, yes?
And it looks like you have some on the spring itself. Or some kind of tubing. (The newish one I am examining as we speak is bare wire, held on with some kind of tape-like stuff labelled 'Reflex'.)