Discussion about the Korg PolySix synthesizer

Hey all.  About a year or more ago I was having occasional dropouts on
certain notes, and some notes that I had to push just right, or really
hard to get to sound.

I did some digging and came across the MG Checmicals Keypad Repair
Kit, as recommended by a number of synth dudes.  The link for it is
here, I'm sure many of you have seen this
http://www.mgchemicals.com/products/8339.html

I applied the repair and the keys were working great, but after a six
month or more break from using the synth I'm having the problem again,
where some keys have to be pushed just right to trigger. I blew the
area out with some compressed air, that didn't help anything.  

I'm wondering if anyone has applied a keypad repair solution of any
sort, and then had to fix it *again* with any results?  And also if
anyone has any tips on what to do from here.  It seems that applying
another coat might not be the best idea, and I wonder if there might
be some solution to remove the coat and start over?  Or something else
entirely.  

And of course, my band has a show tonight, it's our record release
show/party.  I've already completely sampled the patches I cannot
emulate in any way with my other synths, and am playing them on my
Triton.  But do you realize how much synth-nerd cred I'm losing here
by playing a sampled version?  What if someone notices?  Then I'm done
for!!!  :)  Just kidding on that.