Originally I thought that they went perch to perch but have since found out when inflated they expand between the coils and increase the stiffness of the coil. They will to some extent sit between the perches too and I guess as the perches compress them they will stick further out between the coils.
Sent from a tiny keyboard with fat fingers, apologies for my spelling. .
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Cheers, Dave :)
2010 JK, then a 2015 KL Trailhawk, now a 2017 GC Trailhawk!
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