Enhancing level 20 weapons?

[xtremex1]

Before I've enhanced a lot of level 20 weapons to +6. I remember that I put the stones into the same slots each time.

But I forgot what positions I put them in.

And so I want to enhance my level 20 weapon and shield to +6

You guys probably have different positions or maybe the same.

Can you guys tell me which slot you put your stones into that had the most success for level 20 items.

I just want my weapon and shield to +6, or at least +4.

I also think I heard before that enhancing shields were harder. Correct me if I'm wrong.