is it possible to have the LOCK key only capslock letters, and not act as shift being pressed for every key? so, any key that's not A through Z should be unaffected.
No. That is how the keyboard works. The interface translates exactly what the keyboard is doing. The CAPS lock does not work as a computer CapLock key. CAPS is really a combination key with another key. CONTROL is another combination key.
In other words, pressing CONTROL does not transmit that the CONTROL key is pressed; only when in combination with another key.
The CAPS key activates the SHIFT function when a key is pressed.
Not every key works on the Adam keyboard. An example would be pressing the control key in combination with another key. Not every key works in combination with the control key. All the letters do along with 2, 6, and few symbol keys and the arrow keys.
Combination keys specific to the Adam keyboard are HOME+arrow and two arrow keys triggering/translating to keypad numbers on the PC.
Just as a comment, the only way to solve what you want would be to make the number keys work the same as normal or shifted but then you would lose the symbols of the number keys.