I wouldn't worry about it until you actually have to. The larger the gap, the larger the arc, the larger the flame front. Until your boost level or something else is keeping the arc from occurring, .044 is fine.
Later
"Only two things are infinite, the universe and human stupidity, and I'm not sure about the universe." -Albert Einstein
When was the last time you *really* did something with your Z to call yourself a Z enthusiast?