Last night I ShadowCrafted my Assassination Rogue and for some reason when doing the calc for regemming it swaps out my 320 agi gems for 480 Mastery Fractured Serpent, and swapped out my delicate primordial Rubys for Adept Vermilion Onyx. I understand at some point 2 Mastery will overtake 1 agi, however I was under the idea this starts happening at upper Ilvls and not for someone still sporting blues with no set bonuses. My base dps SC showed was 70.9k before and after the regemming/reforging it dropped to 70.2k. Any ideas? I believe this maybe due to socket bonuses, however I would think that if it was prioritizing the socket bonuses, it would place the 320 agi gems in primordial sockets where no socket bonuses are applied or a concern. Also, the mastery being better than agi, is this due to diminishing returns?