TheSig
I noticed something with backpacks and weight capacity. I have a regular enchanted backpack that can carry up to 200 stones of weight. A regular clean (non enchanted) backpack can also carry up to 200 stones of weight. Since I started using the Etherealize spell, I have been equipping a regular clean (non enchanted) backpack named ShopFood.
Since I am not getting the enchanted spell benefits that are on my enchanted backpack, I decided to cast extended spells (S/D/R/Missile Shield) on the regular clean ShopFood backpack. What I noticed is that when you cast spells on the clean backpack, it reduces the carry weight of the backpack. One of the backpacks that I casted on could only accept 100 stones. Another backpack I tested maxed out at less then 100 stones. Not sure what is going on but I figured I would post it here.