I'm having a little issue with my Taifun gt4. Bought it a few days ago and when it arrived I popped a 3mm id Ni80 fused clapton in at 0.43 ohms. But the flavour isn't quite there yet. Can anyone tell me what the perfect coil position is? Should it be perfectly centered? I have mine like this and the top of the coil is at the same height as the posts.