Just curious how often people service/replace bearings in their dual ski trailers. After the 4th I *may* haul my skis about 5 hours one way to a family members cabin but I am pretty skeptical as I have never trailered them over 1.5 hours. I often feel the hubs just to make sure they aren't about to light on fire after trips, but they've never been anything past warm. Should I take them apart and at least repack them before this, or should I just replace both wheel bearings? The last thing I need is to be stranded on the highway if I lose a wheel 5 hours from home.