I have a fairly new, 2 moths old, shimano inter-8 hub that is now acting up. I installed the hub myself and after about a week, got it perfectly adjusted so all 8 gears worked great. Then suddenly after about a month or so of perfect operation gears 5-8 now want to skip. I can get gears 1-4 to shift as expected, but no amount of adjusting seems to want to fix the issue. I can get around fine on gears 1-4, but it would be nice to have the option to use those gears.
I don't ride hard, and only apply light to moderate pressure on the pedals. Just enough to get going at a slow pace.