I think you made the wrong one, accordign to EQTraders the delay on the silk version should be 43, the delay on the one you made is 51. check your material.
Rough Elm Recurve Bow (silk)
Slot: RANGE Slot: RANGE
Skill: Archery Atk Delay: 43 Skill: Archery Atk Delay: 43
DMG: 11 DMG: 11
WT: 4.0 Range: 75 Size: LARGE WT: 4.0 Range: 75 Size: LARGE
Class: WAR PAL RNG SHD ROG Class: WAR PAL RNG SHD ROG
Race: ALL Race: ALL
Slot type 4:empty Slot type 4: empty
EQ item ID: 8807 EQ item ID: 8807