Skill Books taking up bag space

I keep getting awesome new advanced skill books, but dont have monsters that are good enough for these skills so i leave them in my bags and now i have around 15 skills books sitting in my bags just taking up space and i end up teaching a good skill to a low grade monster. So I think you guys should add another bag for skill books, so they wont take up bag space.

Before you go into battle, fill up your bag with items,

So acquired new items, such as skil books, will be stored in your mail box,
Mail box can hold 50 items, that's a lot.

Oh I know, I abuse that but try not to keep my mail to packed because it starts deleting items past 50

Oh I know, I abuse that but try not to keep my mail to packed because it starts deleting items past 50

Wow, you have over 50 books? You have mad luck, wish I see the skill books more often like you

I have this same problem. I'm pretty mad because I've been trying to make my glider an all founder like my flaunt but ended up teaching it poison whip. One box later (which I found in my mail), I got the poison petals I meant to give it. Wasteful. I could've made an all founder lupa or something with that poison whip.