If I have 9/10 skill points invested into lvl 50 crafting ability (e.g. woodworking which means I can use nightwood and it is the only mat used for doing the crafting writs) and obtain a survey from crafting writs, why do I find lower level mats like ash or mahogany? I should find only nightwood, i.e. the mat necessary for the completion of crafting writs, corresponding to the actual amount of skill points invested into the given crafting ability... Does it really work as intended?