Crafting Avant Mail problem

[Tulant]

Platform: Windows XP
ISP: Rogers
Type of Internet Connection: CATV
Internet Connection Speed: 15Mbps
Date & Time: 17:03 EST Sunday May 27 2012
Frequency: repeatable
Character Name: Tulant
Race: ElvaanM
World: Fenrir
Main Job: THF 99
Support Job: Dancer
Area and Coordinates: South San-Doria M-8
Party or Solo: solo
NPC Name: South San-doria Synergy engineer @ M-8
Monster Name: n/a

attempted to craft with synergy an Avant mail with the items in the recipe provided to me by the Synergy Engineer. when i attempt the recipe below i get the error " that recipe is impossible at your current leathercraft skill level.

Recipe is :

2 x Mythril Sheet
2 x Durium Sheet
1 x Tiger Leather
1 x Ruszor Leather
Smithing : Veteran , Leathercraft: Journeyman , Synergy: adept

Currently Veteran in smithing at lvl 91 , Journeyman in leathercraft at 51 and lvl 80 Synergy.

Any help in this matter would be greatly appreciated


cheers