not all of them had two... I have taken several of these apart during restorations and I bet only 2-3 have had 2 of them in there..
I've reassembled them with one and operation is just fine ...2 will only make the clutch mechanism "harder" when rotating the handle as there will be more resistance to the spring...
you'll be fine with one.
Good to know. Thank you. Does is matter which end I put the rest on the spring?