The first time I did an amendment was after about 29 days waiting I was right near the top of the queue, I got onto the phone to ComSec and the operator researched it and advised to make the amendment on my terminal for another 30 days but not to change the price it worked as it did not alter the position in the queue incidentally all up after about 33 days my order got whacked, yes it was a real lightly traded and tightly held stock, cheers BC
