Originally Posted by
Museigen
I would focus on farming flex for a little while until you replace the low ilvl / bad itemized pieces. Things like the evil eye trinket gotta go, I realize it's probably just the gear you have, but to add a little extra clarification you CAN focus on more tank dps but only AFTER you won't go squish. Get past the point of squish, then work on shuffling around stats to squeeze more dps out at the cost of a little survivability.
Specific things;
Get rid of evil eye
Replace pieces with hit to get it below the high 11% you are now, all that extra hit could be more parry/mastery
Get somewhere between 150-200% mastery (where you feel most comfortable) then go full parry. Stack parry like a parry addicted drug addict.
Conversion is a no-no, get death pact. (way higher gear/vengance you can death siphon for more damage, but for 9/10 cases just use death pact)
Runic corruption is fine, don't sweat people saying "Go blood tap or go home."
4 pc tank is very, very powerful when coupeled with malkoroks cd reduction trinket. More dancing rune weapons that give 2 "Free" death strikes each time.
So, besides conversion, the idea is "Get gear that is better suited to blood rather than frost" which pretty much means farm flex. You could easily do the first half (probably up to thok) on normal too, but clearing flex could fill a lot of those weak gaps that would propel you to normal garrosh quickly.