I wrote to Pearce about this and never recieved and answer so perhaps someone here might know - I added the Pearce Mag extensions to both my 10 round factory magazines for my Glock 26. According to the instructions and the advertising it should add 2 rounds to the magazine capacity. However I have been unable to get more than 11 rounds in the mags. Is this usual? Is there a cure? I added the extensions primarily as a pinkie extension so if I don't get the extra round the world won't stop turning but if there is an easy fix I would like to know.