Just sharpened blades on my Montgomery Wards 42 in, 18 HP riding mower and wanted to know if there is a specific way to reinstall the blades on the spleened shaft? I didn't want them to be hitting each other when I start the mower. Initially I positioned the second blade the opposite of how the first one was. Like the one was aligned east and west and I then put the other on aligning it north and south., Is this ok?