@shanahall ,Shana, could not find cushion install instruction for your model, most cushion install by wrapping around speaker cup housing and flange tucking in as you go. Links below may help by showing installation of Pad on a few different models. Good luck. I hope this helped you out, if so let me know by pressing the helpful button.
https://www.youtube.com/watch?v=_xkRG6otizw
https://www.youtube.com/watch?v=UayWmlmgW_k
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