If the knot is not cinched down exactly right.....and using those fine diameter lines makes it even more critical.....it will break. That is why I spent a whole day getting it down. I’m assuming you were using an Ajing rod? Which gives you less forgiveness with the stiffness of the rod. I’ve caught a ton of 21 inch Smallies with the same line setup you are using with a Yamaga Blanks Blue Current TZ Ajing rod. I keep a loose drag using supper lines. Many have made fun of me for doing that but break offs for me are rare. Happy you’re tying into some fish.....I’m still searching for a place to be able to fish....LOL.
Regards
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