Hi, I have a Sturmey Archer XL RD5(w) internal five speed hub. In general it works pretty well, however recently I've noticed when I'm testing my motorized bike by pedaling only (this happens under motor power too.) under slight load (up a mild hill) in first and second gear only that the hub will disengage, my pedals will spin for 1/2 to 3/4 turn, then the hub will engage again. To shift I stop pedaling, switch gears, then lightly start pedaling again (on a flat road) then I will pedal a few rotations until I get to my slightly inclined driveway, then the disengagement happens. I've adjusted the cable tension back and forth the full range from when first gear doesn't engage at all on one end of the adjustment (too tight) to where it fully engages, then doesn't engage because the cable is too loose. I know where the sweet spot is for excellent shifting action on all five gears, but no matter how I adjust it 1/4 turn at a time I still get the disengagement, freewheeling, then engagement again. I have about 300 miles on this new hub. Can anybody offer suggestions? My local Sturmey Archer dealer noticed the cog-side wheel bearing was a little loose, so he tightened that, but I haven't yet remounted the wheel to test. Thanks.