Question for you more experienced whoopie sling users.

Earlier this year I set Restless Legs up with a set of whoppie slings (1/8 Silver Amsteel Blue) to use with his Hennesy Deep Jungle on a thru-hike. He's getting ready to flip-flop, starting sobo from Maine & will need a few gear adjustments.

He reported that his whoppies are getting sticky & hard to operate. He asked if this was normal with almost daily use. I'm not exactly sure what he meant without seeing the whoopies myself.

Any ideas?

I have enough 7/64th Black Amsteel to make another set before he reaches Pine Grove Furnace approx next Tuesday. Is there something I should be watching for when I make the new set?

... or any HF members have a reliable set they'd part with in case it's something I'm doing wrong?