I had a situation where 'C' clips could not be used, even with the spring fully wound there was insufficient space between movement pillars/arbors to fit them. I know I could have used wire to wrap the springs but then had a 'I wonder if' moment. I have a lot of those plastic cable ties (1.3mm thick 4.7mm wide) so decided to test them. I made a tie into a loop and and passed it over a horizontal bar fixed to the table of the pillar drill. The top of the loop fitted over the hook of a digital luggage scale. The top loop of the scale went over a hook fixed in the drill chuck. I wound the table down which drew the quill after it. I then used the quill lever to exert force on the tie. I tested five ties to destruction and the lowest reading I obtained before the ratchet on the tie failed was 70lbs, so I used them to hold the springs. If you want to try this make sure that you test some samples of your cable ties first.