Wish I could help you out, but I don't use weed guards. but you could try poking the weed guard up inside the tube to where you think it should come out, push it through the tube and follow with the weight to seat it inside the tube. once in position push the eye through the body. Sounds hard but I'm pretty sure it can be done. Good luck with your dilemma.
Proud to have served with and supported the Units I was in: 1st IDF, 9th INF, 558th USAAG (Greece), 7th Transportation Brigade, 6th MEDSOM (Korea), III Corp, 8th IDF, 3rd Armor Div.
1980 Ebbtide Dyna-Trak 160 Evinrude 65 Triumph