I have a NWC fixed head injector and a GEM G-bar, neither of which I am getting a particularly good shave with. I used a Ted Pella injector blade and a store bought Treet GEM blade. With both it feels like there is a lot more pulling than cutting, and with both the stubborn hair on my chin and neck never get cut. I just ended up reducing down to minimum stubble and then whip out the Merkuer to get down to BBS. For GEM and injector fans any suggestions? Has anyone else run into the same problem?