So I figured it out.
Basically it was only broadcasting at Full (20 MHz) instead of the Turbo (40 MHz)so changed it to NA-Mixed and could then setup the Turbo (40 MHz) now its broadcasting over the 2 channels and full 300mpbs!
Excellent post, just the answer I was looking for.
Also if you want Turbo (40 MHz) on the 2.4 GHz frequency you need to select NG-Mixed from Wireless Network Mode. _________________ WNR834B v2 | 2x WRT54GS v.4 | WNDR3700 v1