So I just transitioned from 10m to 25m and as I've geared up I've found a lot of ToT gear is lacking mastery.
I went from reforging all mastery pieces and still being over 50% to now being around 47% (after reforging all my mastery pieces to either haste to meet the 3039 mark or to crit).
Should I leave what mastery pieces I have alone(instead of reforging) or is being below 50% okay?