Currently, "/f chest log" does not show item names and as such, we can not confirm whether it was a normal unenchanted diamond pickaxe or trench pickaxe that was stolen. In addition, we can't accurately track if there are other special items/tools in the faction chest. I believe there should be a gui instead of a message in chat to display the items, names (coloured or slanted names) and enchants/custom enchants. However, there may be other solutions that the factions community may find suitable.