not sure if people know this, i was suprised a lot of people i spoke to didnt know this either
Lvl 26 mods, armorings, mods, enchancements, hilts barrels etc, if they are crafted and you buy them then the tooltip says no research available when you go to RE them. the way round it is equip the item into your gear first, then pull it out, now you will have the 20% chance to learn it... does not work with armoring for slots (ie armoring (hands), armoring (legs) etc