There is a question I hope to get answered to regarding Super Mario Bros. for the NES? Why is there no time bonus for each last level of each world - you know, the castle levels (the x-4 worlds)?

I'd like to be able to know what to do to change this so I do get a time remaining award to my score in these levels. Thank you! Which code in the game's ROM instructs to leave out the time remaining bonus in the x-4 levels?

~Ben