Welcome. In this thread, I want to address some of the issues ret paladins often have with their armory. This is meant as a copycat from a similar topic concerning holy paladins. The idea is that with the recent influx of ret paladin issue threads, this thread is meant to at least remove some of these.
1. wrong professions. What you should have: jewelcrafting + blacksmithing/engineering. Acceptable to a degree are leatherworking, enchanting, inscription and alchemy. encouraged to unlearn are tailoring and skinning. Unacceptable are mining and herbalism.
2. wrong spec. the basic spec is 5/5/55 (http://www.wowhead.com/talent#sVZVZVfbtbIuhdIfsu). From there, you can either go to 11/5/55(http://www.wowhead.com/talent#sVVzZVZVfbtbIuhdIfsu) or 5/7/59(http://www.wowhead.com/talent#sVZVMZVfrtbIuGdIfsu). Discuss with your raidleader and/or other paladins in the raid what you should do.
3. not using the 2 required glyphs. The 2 basic glyphs are glyph of consecration(http://www.wowhead.com/item=41099) and glyph of judgement(http://www.wowhead.com/item=41092). You should ALWAYS use these 2. The other glyph is discussed in the next part.
4. not using SoV glyph (http://www.wowhead.com/item=43869) when below 21 expertise. Even when you can only use 5 expertise from it, the seal of vengeance glyph is better than the next best thing. When you can’t use at least 5 expertise, it is better to use the exorcism glyph.
5. gemming or enchanting wrong. Except in some cases, using a pure STR gem in a red socket is better than using a pure expertise gem. This is because not all our damage benefits from expertise, while nearly everything else doubledips or even triple dips into STR. In a similar boat is enchanting for expertise. the problem is that, compared to the AP enchants (50/44, equal to 25/22 expertise), the expertise enchants are under budget (15/20). In a related matter, you should always use a relentless earthsiege diamond(http://www.wowhead.com/item=41398) as your meta gem, and one nightmare tear as the blue gem in the blue socket with the highest socket bonus.. All other blue sockets should be gemmed with pure STR. Yellow sockets with a +4 STR socket bonus per socket should be gemmed with STR/crit. I will include math on the meta below.
6. not being hit capped. 95% of your DPS benefits from the hit cap. The only things that don’t benefit are ticks 2-10 of consecration. You need 262/263 hit rating to be capped. Until you are hit capped, gemming for hit is the best investment of itemization points.
7. being over the hit cap. Any hit above 8% is nearly totally wasted. The only thing that benefits from hit beyond 8% is exorcism and the first tick of consecration (both of which are on the spell hit table).
8. using the STR ashen verdict ring. Blizzard added a STR ring, but the problem is that they simply took the AGI ring, dropped the AP and replaced the AGI with a bit more STR and (the big problem) more STA. this means the AGI ring has more bang for its buck, because it has less budget wasted on STA.
9. not using berserking. Berserking is the best enchant a melee DPS can have. 400 AP is nothing to sneeze at, and the uptime is very high. Unless you have a cash problem and can’t afford it, berserking should always be the go-to enchant.
10. bad trinkets. Regardless of what you think, any trinket with a ArP proc is bad for ret. 2 easily acquirable trinkets for retribution are the mirror of truth(http://www.wowhead.com/item=40684, 40 emblems of heroism) and darkmoon card: greatness(http://www.wowhead.com/item=42987, reward from Nobles deck turnin, card or trinket currently costs about 3-4K, depending on server). Neither of these should be replaced until ToC25 (http://www.wowhead.com/item=47303), ICC10 (http://www.wowhead.com/item=50342) or ICC25 (http://www.wowhead.com/item=50351). Some view deathbringer’s will as a possible upgrade, I won’t digress on this matter. needle encrusted scorpion (http://www.wowhead.com/item=50198) is a minor upgrade over MoT, but you should not take it over any other melee DPS that can use it.