My fill process would change if I can't see the fuel level in the tank as I am filling. Can you see the fuel level as you fill or is the diameter of the hole too small? This is one of the things that has kept me from buying an aftermarket fuel cap. I hate the silver factory cap, but I don't like the idea of a smaller hole (how often do you ever hear that?), a cap you have to set somewhere or risk it falling, and the ability for a passer-by to open the tank and put something unwanted into it if I take my bike to work and it is sitting out in a parking lot all day.