Faxanadu - Why Does Wing Boots Time Drop After Several Ranks?

[ColecoFan1981]

http://www.the-interweb.com/serendip...ing-Boots.html

While the code explains the usage of the item in question, could anyone please explain what code actually decreases this particular duration on the player's fifth, ninth and thirteenth rankings?

40 seconds: Novice, Aspirant, Battler, Fighter (EXP: 0, 1,000, 2,200 and 3,500 respectively)
30 seconds: Adept, Chevalier, Veteran, Warrior (EXP: 4,800, 6,200, 8,000 and 10,000 respectively)
20 seconds: Swordsman, Hero, Soldier, Myrmidon (EXP: 12,500, 15,000, 18,000 and 22,000 respectively)
10 seconds: Champion, Superhero, Paladin, Lord (EXP: 26,000, 30,000, 35,000 and 45,000 respectively)

I ask because what I would like to do is be able to increase this duration after every four rankings; I mean, it's ridiculous that the Wing Boots only last 10 seconds on the highest four rankings. Kind of like how another error in programming caused the Pendant to decrease your attack power rather than increase it (which in that case is fixable by changing the instruction from BNE to the intended BEQ). It would also be nice if I could somehow double these four durations (to 80, 60, 40 and 20 seconds respectively).

~Ben