You may have gotten a bad spool (which happens with all lines) but I have used the 6lbs test WM camo line and not had any problems. Actually thought it was stronger than 6lbs test because while "pushing" minnows in winter time at Blackshear and getting hung up on everystump in the lake it allowed me to pull the hooks straight and kept me from retying as much as Trilene and Stren that I also use. Personally, Trilene XL 6lbs test is what I prefer on my spinning reels. Cheap but strong as any other 6lbs test. I don't know if there is a 4lbs test line I like. I tried several kinds last two years trying to get deeper with less weight while trolling but just couldn't stand retying everytime I "bumped" into something and broke off several good fish. Just my .02.........keep trying.....I am thinking about the flourocarbons next to try but just so dang expensive.......
Slab Masters Tournament Trail ............... www.slabmasterstournamenttrail.net