Its very addicting isn't it .. ? lol
The knots I tied were the real world knots I use while fishing. I was happy to see them break a good amount above that 60 lb. test.
The ring used on the machine is always going to break our knots sooner than what would happen if they were tied to a smaller diameter hook ring.
-So it takes a special application more suited to the ring diameter.
-

which I'm sure you know if you tied a 99+
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A few things that work.
-Draw the knot the shortest distance possible.
-Don't cinch the knot down like a gorilla - draw it uniform and let the machine do the serious tightening.
-Tie it wet if you can. This is a little tricky, but it helps.
-Double all the knots.
and lastly don't yank on the tag end hard, draw it uniform, but not seated too tight. This step can and will damage a critical part of the working line.
Good Luck
see you there.