"Aged Spear (r55) -> 1-2x FC2, 1x Aged Spear Shaft (EY: 0.2) (needed for Zodiac Weapon, buy for 3k from Silver Bazaar vendor)
Perfect Firewood (r90) -> 1-2x FC3"

i have been spamming this daily since release of the zodiac weapon quest. and i have never gotten FC2!! either i get Aged Spear Shaft (the rate for this 1 out of 10 desynths). or junk lumbers/ingots. or clear demi 2. (1 only).

also i never got FC3 from desynthing the NQ Perfect Firewood!!! (only when i fail HQ crafting them. not very often)