I'm guessing this problem has to do with the material the shooting line is made of. I've always used 400lb mono and never had this happen even once. I think 400lb mono is too stiff to tangle, the bands/wishbones will push it rather then mix with it.
Mine did it 3 times in a row with 400 lb Jinki. I've seen it happen to guys after a fresh band shorting.
When I went in search of the Black Marlin record in La paz, I shot wire rope and 5 5/8 band on Double
Trouble. I rigged a band retention bridle that I used on my 72'' Negro Modelo gun.
I'll draw up a diagram Thurs after baseball. it stops the wishbones after it leaves the shaft but makes reloading a little more of a hassle. Big Black Marlin are worth it though.
My double has never done it, even on shots 6' of the tip, I remember swimming down and grabbing my buddy
thirty feet down when he wrapped the bands on a tuna shot and would not let go of the gun.:@
Cheers, Don