You're having this problem again? Isn't this like the 3rd or 4th Turbo since you've had that car? Where is your oil feed coming from? If it is the stock location it may be too much pressure for the 14b/16g because the 1g's were fed off the head...you may need to put a restrictor in the feed line to cut back on the oil pressure that's getting to your turbo...
Is turbochargers.com going to do anything about it, or are you going to have to buy another turbo? If you have to buy another turbo I suggest Forced Performance, I've heard amazing things about them.
On another note, if the oil feed is coming off the filter housing, I would try to restrict it...the 4G63 in my experience has rather high oil pressure and coming off the filter housing may be simply too much pressure for the 16g and you may need to restrict the oil pressure on the feed line so it doesn't force too much oil into the turbo.
Another thing I suggest checking is your return line, check to make sure it's not plugged in any way, and flows freely. If there is any obstructions in the oil return, it will slow down the rate at which oil can leave the turbo, and the feed would keep pumping it in, it would basically force the oil to make a new route out of the turbo...
Good luck man, I know how frustrated you prolly are...