If it was me, I would try putting an EK Landing Pad in there and see if that works.
If that doesn't work then put in a WASD O-Ring and see if that helps.
I don't really know how the stabilizers are configured on a Topre spacebar so I just throw u these ideas for free :)
My HHKB also does this which is a bit annoying!
OMG, n00bs. Use a HIGH viscosity lube. that'll teach the rattle who's boss. >:D
OMG, n00bs. Use a HIGH viscosity lube. that'll teach the rattle who's boss. >:D... is that how you do it? any video tutorial?
ugh great FILCO PING ROUND 2
Though I don't care about this rattle I also applied lub into hole and noticed it mitigates the rattling a bit but doesn't solve completely. Anyway YMMV.what's the YMMV?
You need more grease?
I used TAMIYA grease this time :)Show Image(http://i.imgur.com/xiZ2Dl.jpg)
Ping! Or i guess it's Thonk! now.
think of the rattling as "personality