All good comments, only one thing to add.
Make sure that your lower arms are "LEVEL". if not your cut will be on the angle and it will trim lower on one side and longer on the other. Looks like C*ap... don't ask how I know.
Make sure that your lower arms are "LEVEL". if not your cut will be on the angle and it will trim lower on one side and longer on the other. Looks like C*ap... don't ask how I know.