in theory you can change this:
C8, 3E, 35, CD, 1E, BB, F5, E1, CB, 69, 20, F5.
00, 3E, 35, CD, 1E, BB, F5, E1, 00, 00, 00, 00.
It should work fine
It appears to do the trick, cheers

I've remapped the buttons differently, so the menu looks different now, I've done this so that you can select all the ball colours with joypad 2.
"
Steve Davis Snooker "
InstructionsUse Joypad 2 for onscreen Menu, apart from the last option, use Joypad 1 button 2 for Green Screen.
Use Joypad 1 to play the game, Joypad 1 Button 2 = Change original shot instruction before playing it.
Press the Console Pause Button to " Retake your last shot ".
Play again = Joypad 1 Button 1 = Yes, Joypad 1 Button 2 = No
Press Joypad 1 Button 1 to pass " Enter Name "
Use Joypad 2 for selecting colour after you pot a red.
Yellow = Up
Green = Left
Brown = Right
Blue = Down
Pink = Button 1
Black = Button 2
I've left out " N for New Game " on the GX4000 due to lack of buttons, I have remapped it to the ESC key for Plus Users though, I also remapped O and P to U and I so I could change the console pause button
to " Retake your last shot ".

"
Steve Davis Pool "
InstructionsUse Joypad 2 for onscreen Menu.
Use Joypad 1 to play the game, Joypad 1 Button 2 = Change original shot instruction before playing it.
Press the Console Pause Button to " Quit Game".
Red or Yellow ? = Joypad 1 Button 1 = Red, Joypad 1 Button 2 = Yellow
I also remapped O and P to U and I so I could change the console pause button to " Quit Game ".

"
Blagger "
I've enabled the inbuilt cheat to work now.

Press Joypad 1 Button 1 to Start the game from the begining.
If you hold down Joypad 1 button 2 and press Joypad 1 Button 1, you will start on the screen displayed.
If you lose all your lives, just press joypad 1 button 1 to start the same level