hi, i guess i can help you
i work with L2JServer and there is not the DROPADENA=...
it is not either, but if you read the entire file you will see not so further this lines
# List of items affected by custom drop rate by id, used now for Adena rate too.
# Usage: itemId1,dropChance1;itemId2,dropChance2;...
# Note: Make sure the lists do NOT CONTAIN trailing spaces or spaces between the numbers!
# Example for Raid boss 1x jewelry: 6656,1;6657,1;6658,1;6659,1;6660,1;6661,1;6662,1;8191,1;10170,1;10314,1;
# Default: 57,1
RateDropItemsById = 57,1
well, as you can see there says "RateDropItemsById = 57,1"
and in 57,1 . . . change the 1 for the multiplier you want to have in your server (:
it works for me, i hope for you too
[sorry for my english, i am learning yet (:]