You might have snapped/broken the plastic ball caps that are at the ends of the lever arm rods... Those are designed as a weak point to be the first to go if there is something wrong during the top up/down process...
Take a look at this link I found for you...
http://www.renntech.org/forums/index.php?/topic/20109-broken-boxster-987-roof/
Hope this helps...
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Some stuff for sale: M030 S 24mm front sway bar, M030 base 19.6mm rear sway bar, 996 GT3 OEM Porsche Motorsport front strut mounts monoball "camber plates"
WTB: looking for some 5-7mm spacers with extended bolts