The solenoids on the valve body are your Fn and layer shift keys
OK so it took an hour and a half, but I went through and doublechecked my traces-to-buttons colored lines, and here is the wiring of the stock board. Items in (parenthesis) are going to be omitted, mostly the Favorite and Web keys. Keys on the TenKey area are preceded by "TK".
Please feel FREE to point it out if there is any key that isn't listed on both a TOP line and a BOTTOM line. The TOP lines are on the top sheet of the matrix, the BOTTOM lines are on the bottom sheet of the matrix, and together they should have all keys duplicated exactly once. The two digit number after Top or Bottom is the number of the contact on the controller, as numbered on my image.
Bottom 01 W
Bottom 02 LWin V 1 F3
Bottom 03 Q
Bottom 04 Ctrl Esc (Mail) 4 Fav5 F6 Flock
Bottom 05 LAlt 2 (Search) F4 3 Mute
Top 06 LAlt RAlt TK+ TK9 TK8 TK7 (TK( ) Home End Play P [ ] \
Top 07 B Caps (Web) (Search) N M < LeftArrow DownArrow RightArrow TK0 TK. FLock
Top 08 V C X Z Esc F7 F8 F9 F10 F11 F12 CarriageRet (TK<-) Menu
Top 09 LWin (Fav1, Fav2, Fav3, Fav4, Fav5, Fav*) Y U I oO PrintScrn ScroLock NumLock TK/ TK* TK-
Top 10 LShift (Mail) 7 8 9 0) RShift Delete PageUp TK4 TK5 TK6 (TK) )
Top 11 Space A S D F Q W E R T Tab F1 F2 F3 F4 F5 F6 Pause
Top 12 ~ 1 2 3 4 5 6 J K L > ; ? - + Backspace Insert
Top 13 LCtrl G H RCtrl " UpArrow TK1 TK2 TK3 TKEnter (TK= ) Calc PageDown Volume+ Volume- Mute
Top 14, Top 15, Top 16 (to zoom control)
Bottom 17 E
Bottom 18 R
Bottom 19 T
Bottom 20 ~ A G B Y 7 F7 P
Bottom 21 S N H U 8 F8 [ -
Bottom 22 D M I 9 " ] + F9
Bottom 23 Space Z (Fav*) Volume+ > RAlt
Bottom 24 C (Web) F2 2 RCtrl
Bottom 25 F 5 0) oO < F10 \
Bottom 26 LShift 3 F5 (Fav4) Calc CarriageRet
Bottom 27 X F1 (Fav1) Volume- Play RShift ?
Bottom 28 6 LeftArrow UpArrow Delete Home PrntScrn F11 Tab
Bottom 29 J DownArrow End PageDown PageUp ScrLock F12
Bottom 30 BackSpace TK- TK+ TKEnter Caps
Bottom 31 Insert Pause (TK= ) (TK( ) (TK) ) (TK<- )
Bottom 32 ; TK* TK9 TK6 TK3 TK.
whoopsy I skipped 33 in the numbering! I left it out here for consistency with my image
Bottom 34 K Menu RightArrow TK1 TK4 TK7 NumLock
Bottom 35 L TK/ TK8 TK5 TK2 TK0
...64...