Replaced plugs. Works better with new plugs.

But I pulled one wire through the rubber cone and fed it back through - I think.

It was like trying to string a wet noodle through a hole you couldn't see in a place you couldn't get your finger. Have I damaged this one (no 3)?
Apparently with no impact, as the car runs better with new plugs.
To be sure; should I replace the wire set too?
04 Aveo 125,000 KMS (not miles). (First set of plugs for me after 70,000 KMS.)
Thanks for being so helpful.
Clem