Maybe you can try to use --klondike-options 360:65 and hopefully you will get ~5.7GH/s.
with clock speed at 342 i get between 6 and 7 Gh/s, more towards the low 6 but it will spike over 7 depending on the pool im using.
Good to hear that.
It seems your K16 is working much better than the one I found in that thread lol.