Just got of a 16 day trip in which I had three failures on my fg knots. Line pulled out of connection after moderate pull once and 24# drag twice on 100# fluoro tied to 100 lb spectra. Have tide that knot several dozens time in garage and never been able to break knot or have it slip. Always been the fluoro or mono that was breaking. VERY CONFUSED, any help or suggestions other than using another knot.