Lv4_weapon Quest

Well, I was attempting to make the lvl 4 weapon quest to create a Tirfing. The NPC gives me this message:

"1705 LV4_14:
1706 mes "[Tabezthan]";
1707 mes "Umm...you don't have a business with me, do you?";
1708 mes "Please do not think of me as an old fool.";
1709 mes "When a man gets older, he can see through other people's minds.";
1710 mes "Go ahead and do what you have been doing.";
1711 mes "Do not let me intrrupt you any longer.";
1712 close;"

Taken from the script. Looking up the script, even though it might be outdated, I found this:

1172 if(lv4_weapon < 15) goto LV4_14;
1173 if(lv4_weapon > 21) goto LV4_14;

So, meaning all THREE characters I've tried to do it with had a lv4_weapon variable of under 15 or above 21.
(For the record, I've tried on : Koldar, MikeDot, cagalli)
NOTE: Koldar's was 55, MikeDot's and cagalli's was 8.)

Koldar made an immaterial sword before, but at the end of the quest, it resets the variable back to 0, so I should be fine... But I'm not. And even for a character that never did ANY quest but the Umbala language quest, it didn't work, either.


1- The characters were not overweigt.
2- I tried with everything on me, with just Emps Golds and Steels, with nothing, same dialogue.

Can't think of anything else. I'd find it myself but i have no access to that. xD