Bug with ranged dps -- N help fast

[damsa]

So my dmg output as show in char sheet is 123-143, with Bow of Plunder which is 20-39 dmg, when i replaced that one with Skystriker Bow 30-57, my dmg changed to 114-142, same happens if i put on gun dmg 24-46, then my dmg as show in char sheet is 113-136 .

I thought problem might only be on char screen, u know like it's says wrong, but works as it should, but it's not i'm doing less dmg with better bow, than with lower one.

So please help.

Fast.

thanks