Probably means PowerTune +10 instead of +20 (I think)
290's are a little weird to configure... one of my XFX's won't run on anything other than 947 (stock clock) lol... It also drops off BAMT 1.2 every once in a while, however, it doesn't affect shares so I don't really care.
this sounds like an issue i had with bamt and my 290s
https://litecointalk.org/index.php?topic=2924.msg76025#msg76025 helped me with this.
sry 4 OT
EDIT:
