It would change beautifully with the up button, but the lever mechanism behind the brake lever felt "woolly" and "vague" and it sometimes slipped a cog. I immediately thought of a worn G spring, but as I only put new ones on in December when I modified it to 10sp, I hoped it was something simpler. Yesterday I gave it a good dowsing in GT85, but during my ride today it felt no better.
So I bit the bullet and spent a happy couple of hours completely stripping it down and re-building.
Basically, it was caked in dried grease, making the cams, springs and ratchets all sticky and stiff.
I'd assembled it after the modification in December with loads of grease that helped hold everything together. You need five hands with 11 fingers on each to re-build one of these! I didn't clean anything out, I just added more grease.
Anyway, this time I assembled it dry after giving absolutely everything a thoroughly good cleaning. I did it, even with only two normal hands! Then I gave it a good dowsing in engine oil, exercising the Ergo back and forth.
It feels as good as new.
Who's a clever boy then?
