Gaia Every 9th Key Not Working

[onehand]

Odd one here.......
Just pulled my SH-01 out after sitting in the closet for a couple of months and every 9th key has stopped working, or 8th key counting from the bad one, depending on how you look at it....As follows
#1 (the first C key)
#9 (the first Ab key)
#17 (the second E key)
#25 (the third C key)
#33 (the last Ab key)
Everything else works perfectly, just those keys not sounding. Switching octaves doesn't effect the problem.
Took it apart thinking cleaning the contacts would fix it, but to no avail. All the contacts still look great, and all of the physical keys function great, nice, tight, and smooth as when they were new.
Any thoughts on this? Maybe someone knowing or having a service manual might understand one particular resistor or similar part going out that would take out the function of every 9th key?