Found this bug while i was messing with my bank to do this you will need 3 of the rare resource you want to hand in i will use brindled leather as an example. On my server it cost 45c to by 1 so its cheaper for me to buy 3 of these then to go farming mobs.
- open up your resource tab
- Split all the resources into 3 piles.
- Open up the trader(Bank) and goto the store and sell(Bank part of the trader)
- Place each stack from your resource tab into 1 pile into the trader
- The 3rd time you place the resource on the pile it will count as "gathered"
Note:This is meant to bypass the need to "Gather" the rare items instead you can by them off the trader and glitch them to trigger as "gathered"
Note: This should work on all Resource gather quest, I have tested it on Silk,Black silver,brindled leather