Level 40 Semi Low Dex Sin, Where to train??

I am a level 40 sin that throws Steelys, Tobi, Kumbi, and Maple Stars, but I do not know where to train. I have a kind of low dex for my level, because I was going to be a dexless sin, then I was going to be a low-dex sin, and now I'm working on becoming a normal sin again.

My Dex is currently level 60, and I want it normal again, and when I'm level 50 I will have 100 dex, if I put all my skill points in dex.

So I want to know where to train, I don't really want to do LPQ but if it is the fastest way to train, then I will, but do not recommend please.
http://forums.mapletip.com/index.php?showtopic=115055