In many crafting jobs there are times when you need 1 or more ingredients and you want to craft that item usually multiple times.

Then you go to farm what you need only to find it will only drop off of a certain mob and then in the zone there is only a total of 8-10 max, and ohh look it also happens to come from a mob used in a quest, so now you have to compete against any one doing the quest that needs the mobs or even other farmers. Don't get me wrong I understand and don't mind competition but when there are so few mobs to start with it is damn annoying especially when it happens over and over while trying to farm your materials instead of forking over the price off the market boards.

To fix you Could add more mobs that drop the current materials or could leave it the way it is but drastically increase the drop rates and drop amounts of crafting materials.