i bought a duster cluster in june. after about a week, week and a half, they started doing the same thing. unfortunately, they died. i think i may have placed them in a bad spot (i think). i had them under a rock outcrop. i found that they need to be placed in under rocks and in a shaded area.
i posted for help but did not receive too many replies.
i don't know how close feather duster conditions are to duster clusters, but hope this helps.
i will be resurrecting my old thread because i have the beginning of another duster cluster growing in a cave.