Need help - press drill spring

[rendoman]

Thank you all for the advices!

It's nice this C shape ring,it seems better than the wire!

I just fixed the spring! As olderan said, I had to cut the spring and re forming the stop loop with oxy torch. I cut more or less 60cm, in order to put the spring inside the bobbin. With surprise I noticed that the energy stored was high (when I cut the wire), but to be honest it was perfectly manageable with leather gloves. I added a little pre-loading of 2 turns. The spindle axis returns fluid, the descent is light. I hope this spring will last !