Lol Drilling depending on LK... ~.~
-Depends on myself-
As for the duplication method, this has been discovered a while back already...it's true for me with Black Parmas in Techi 2 especially as well as Precious Mine ores IE Alexandrites, Adamantites, Ori-Harkons and Zircons.
This method was actually changed, if anyone of you guys have noticed. Back then, if you log out of one map, and log back in, you'll still be on the same map. This works for duplication but the log out and logging back in on the same map has been configured so that you don't duplicate. =.=
I've been drilling for a year...~.~; This should've been old news to any drillers back then. Lol. Nonetheless...you can sort of continue to duplicate items because as long as you remember the SAME exact spot where you drilled it on one server, you could do it in the other. Just judge the guess by spaces from the wall - It works for me all the time...after all I did find like a smutload of Precious Mine 171+ refines...
CARRY ON WITH THE DRILLING
And yes, it is not for the impatient. Those impatients will only complain that they don't have another method for funds and say F*** drilling. Lol. Nub. :0