Originally Posted by dabac

I'm still not sure that I get it. Chain tension should be set either by chain length or moving the rear wheel(or possibly the crank) length wise, not moving the wheel sideways.
And which chain ring are you using, the biggest or the smallest?
Either is unlikely to offer a good chain line for an IGH conversion. The most common approach is to flip the big ring over to the inside of the carrier for a better chain line.