If you drive mainly 50mph or under just stick it in 3. I did that everyday for 4-5 years as my commute at the time was 5-6 miles a day total. Never entering 4th gear is the best way to save the hub.
My 2004 does this too - so just wondering - is it ok to leave it in 3 the whole commute (obviously if it's under 50mph)? Like, is it ok to start from a stop with the selector in 3?