After getting my oil changed yesterday, I was trying to adjust the interval on the maintenance reminder and couldn't figure out how. I read the owners manual, but it only suggests taking it to a Mitsu dealer to have the interval adjusted. Is there any way for me to adjust it myself? I was able to reset it, not adjust the interval. It currently reads 9900 mile/10 month intervals after resetting it, which is far too long. The oil was pretty dark by 5200 miles and 2 months. I'd like to change it to 5,000 mile intervals.

NOTE: If you press and hold the button 3 times in succession while the little wrench icon is blinking, it displays "nor". Anyone know what this means and what it's referring to?