Ok as a leatherworker I discovered the Major Rune of the Engineer twice?!?!
One recipe is 1 Iron Ore, 1 Cured Coarse Leather Square, 2 Destroyer Shards
The other recipe that yielded the same rune is 1 Iron Ore, 1 Cured Thick Leather Square, 1 Destroyer Core
Is this intended? Because the recipe that uses glacial shards does not give the same rune using a glacial core and higher mats