hey guys just brought an fcs abdactor for my back fin box so i can use my fcs fins and to my shock i install it and its loose as and wobbly???
do any of you guys know how to fix this problem as at moment its too loose and cant be used! its a paddle surf hawaii ripper fin box if that matters, any help or ideas would be great cheers

I cut shims to fit from plastic that you get items sealed in eg powerboards, tools etc. Works great.

thanks i will try packing it out

Need to be wary when buying fins and messing around with boxes. i came across the same problem on the week end when trying to fit a fluid foils fin into a box (on a surfboard) that had an older multi - fin in it. The fluid didn't fit. Seems not all boxes are 'pink inside' after all!

Also, I'm now also wary of those 'clip in' pop out fin systems. Bump a fin on some rocks or something and they fall out easily which is costly and bad news if you're on a remote surf trip with only 1 board and no spare fins.