I have updated the binary in the top post, and the main changes are:
You can change the second fire button type by pressing "Select" on the main menu (fire2 = fire button on second joystick).
All hidden bonus items now implemented.
Roller skate movement speed is reduced.
Movement speed on high score entry screen increased.
I am calling this Release Candidate 1 (RC1) as I believe all the issues are fixed, apart from the line through the Boom logo on some consoles.
Let me know if you find any further bugs or glitches!
Thanks,
Chris
EDIT: Found a minor bug so have updated RC1 binary