Are you sure the short Amsteel lines aren't wrapping up in the top of the little block? Causes the chafing on the sharp sides of your flat stamped shackle? I had this happen once and the block twisted up the spin halyard too. Guess how much fun THAT was getting down before the end of the lake.
Dacarls:
A-class USA 196, USA 21, H18, H16
"Nothing that's any good works by itself. You got to make the damn thing work"- Thomas Edison
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