When I first started printing I was using a pull pull method. I then found out about the pull push style and really liked it and no problems for four months or so. The last few orders of shirts I have printed the edges of print have been blurry. I have tried changing the angle of the squeegee, pressure, and speed with no changes. If I go back to the pull pull stroke all of my problems are solved. What else could I have changed to get such blurry prints?