In doing this I have made a few notes you may find of interest.
I have seen 3 different silk screens used on the EPT3600-14B (main PCB).
They have the following markings KAI HWA2-002 V0,   SM YGOI 94 V0,   M-294 HB-C

There will be updates to this section as I get along wth this project, so check back.

TR45 silk screen shows the flat to the left on all silk screens used.
If a 2SC1973 is installed in the location the flat is to the left.
If a 2SC2538 is installed in this location the flat is to the right.

All the board layouts on this site will show TR45 flat is to the right.

There is two places marked TR30 on the following silk screens KAI HWA2-002 V0,   SM YGOI 94 V0.

The Transistor in grid location C5 is TR39 TR30 is at Grid Location E4. The layout drawing on this site has TR39 labeled as TR39.

Note that on the M-294 HB-C PCB silk screen TR39 is marked as TR39

C128 and C129 are swapped on the factory schematics (aka Tube schematics set) on some radios but not all. On all the layouts on this site C128 and C129 will be as the drawing to the left and this also this is also the way all versions of the silk screens used are. And the schematics on the site will be changed.

Tube schematics errors
On the following schematics the part labels are swapped the part value's are right.
DX77HML, DX88HL, DX99V

On the following schematics the part labels are NOT swapped.
DX55V, DX66V, DX73V

On the KAI HWA2-002 V0,   SM YGOI 94 V0 boards C130 silk screen label is closest to the front.
On the M-294 HB-C PCB C136 silk screen label is closest to the front.

Also these parts are swaped on the factory schematics (aka Tube schematics set) on some radios but not all.

On the following schematics the part labels are swapped the part value's are right.
DX55V, DX66V, DX73V

On the following schematics the part labels are NOT swapped.
DX77HML, DX88HL, DX99V

All the board layouts on this site will show C136 closest to the front and the schematics on this site will be change to show this.

The silk screen on all PCB's shows the flat of TR18 to the left.

With a J310 installed in this location the flat is to the right as shown on all layouts on this site.

The following applies to all PCB's

          (a) There are two places marked R140. The layout drawing and parts list shows these
               as R140A at grid location E3 and R140 at grid Location F3.

          (b) There are two places marked R275. The layout drawing and parts list shows these as
               R275 at grid Location F2 and R275A at grid Location E4.

          (c) There are two places marked D94. The layout drawing and parts list shows these as
               D94 at grid location D1 and D94A at grid location F3.

          (d) There are two places marked L50. The layout drawing and parts list shows these as
               L50 at grid location E2 and L50A at grid location A2.

          (e) There are two places marked C84. The layout drawing and parts list shows these as
               C84 at grid location E2 and FL2 at grid location D2.

          (f) There are two places marked J102. The layout drawing and parts list shows these as
               J102A at grid location D2 and J102 at grid location F3.

          (g) There are two places marked C84. The layout drawing and parts list shows these as
               C84 at grid location E2 and FL2 at grid location D2.

Factory schematics (Tube schematics set) there is an error on C101 and R115. The schematics show R115 to ground, but in fact C101 is on the ground side of R115 as shown in the diagran on the left.