I realize this may not be the perfect place to put this but before I random try to bug report something I want to find out if it is actually working as intended.
Ok, I just noticed something on my TR'd Cleric. According to the text for Radiant Servant I & II, each tier reads that it is supposed to adjust the caster level of the spell when using Positive Energy & Light Based spells by 1 caster level (total of 2 caster levels). Based on this assumption a 16 cleric should be able to cast at an 18th level for Heals, which would include the Healing Aura that is bumped up another tier at 18th level. I noticed that on my TR'd Cleric that is 16/3/1 that the aura is not hitting as hard on my guildies as it did when my Cleric was 17/3 (the 17/3 aura hit just as mush as my previous 18/2 split). Now, maybe the text is just confusing, but I would think that with 16 levels of Cleric the aura should tick the same as an 18th level Cleric based on the text description for Radiant Servant.
If anyone knows more about this topic, I would appreciate your insight on it. If this is not WAI, then hopefully the developers could possibly work on fixing this issue.
Update: I figured out the what I was doing differently. It does seem to be working properly. I just forgot to have certain gear equipped this life that I had last life.