Ahem... you may try editing the core clock within the profile, though if you stay barely stable at 1158, it's not really recommended. Memory volts show a flat 0 for me, so I have no idea.

If you want to improve your overclock, try using Autotune, and wait until it cannot go any higher, then back down a bit or go up a bit, and go for a 1-hour artifact test on ATITool.