I bought a Della 8.7 inch meat slicer. I am not real happy with the way it slices. It seems to want to roll under the bottom edge of the meat. Seems like there is too wide of a gap between the knife and the tray. Anyone have some ideas on what can be done to make it more user friendly? My bacon was not semi frozen last time. I will try that on the next run, but just looking for some tips.