Hey there, such items will drop regardless of your inventory space, this just seems to be a case of *really* bad luck. If you are solo and an item drops when your inventory is full, it will be lost immediately and you will see the message "Unable to obtain the <item>. <item> lost." If you are in a party, however, it will go into the treasure pool, and you will have a few minutes to free inventory space to be able to acquire the item.
Pugil scales will drop from nearly any pugil type mob from the lowest level to the highest, as you can see here. It does not have to be Pug Pugils.
https://ffxiclopedia.fandom.com/wiki/Pugil_Scales
Unlike many other MMOs that use special quest items that only drop from special mobs spawned for the quest, most such fetch quests in FFXI use regular monsters and any monster that can drop the item will work.
Remember to increase your inventory space once you get to Jeuno, there is a series of quests that will expand your on-character bag up to a maximum of 80 spaces, and you can also unlock additional storage spaces.

Reply With Quote