[sdiy] Yamaha PF10 keyboard cleaning

[Tony K]

hi list,

I've got a Yamaha PF10 electronic piano keybaord a friend asked me to clean.
I took it apart and I'm not quite sure which approach to take. I've 
never seen this kind of mechanism before - it's quite impressive.
I'm thinking how do I nestle anything between the two buss contacts 
without distorting anything out of shape ? This looks like something one would
maybe soak completely in a solution..hmm

any ideas or tips would be most welcome (and a link to a service 
manual would be nice too)

P.S. I've got the vcr chamois sticks (flat) that might fit in there 
and some De-Oxit 100 % solution in spay and tube dispenser in small amounts.

Tony K