Let's hope that was the key to the mystery of the breaking line. I get broke off a lot but it is the rocks I get hung up in and pull till the line breaks.
I know what you mean. I make my spinner baits and even getting a good deal like I did from you on them I still have over $4 in each one.
I do a quick seat of the pants check of new line when I spool, just to make sure the line is still 'good', and not terribly degraded. Better to find it breaks in the garage than on the water!