I made a mistake when changing a flat. I didn't have it in 4th speed. When I was changing the flat I shifted it for more give on the shifter cable >_< . Now my shifter says 4 and I don't known what the gear is actually in.
I've been field testing it to get the 4 on the shifter to put the hub in 4th speed. I'll commute to work, experience slippage, adjust it so the yellow lines match, and continue experiencing slippage.
I'll unhook the shifter cable. Shift down so 4 is now 3. Field test again.
How do I know what speed my hub is in when the shifter doesn't match?