Consistently Low Backstabs

[Jefftc85]

Hi there, wanted to see if any other Rogues were experiencing consistently low back-stabs? I'm a 54 dwarf Rogue, max level BS, 151 Str, over 1000 Atk & for the past 6 days I will virtually every time back-stab for "79." I may slide in a 280, 300+, ect. as normal, but I have never experienced such a common, low strike back-stab, for such a long period of time. Anyone else experiencing something similar? Any thoughts, suggestions would be helpful. Thank you,