I am a little confused as to how this came about. I'm a bit wiser now and hopefully I can prevent this happening again.
Hope so, Andy! Glad your shakedown tour worked out well, and the post-op cleaning has done the necessary.
Unlike jags ;-) I was tormented for years by the derailleurs on my Eclipse touring bike, slipping out of adjustment frequently but irregularly, so I never knew just when I'd miss a shift, though as you might guess, Sod's Law required that it be halfway up a steep hill with a load of gear.
After a few years, I said, "I'm 65, I've paid my dues, I don't need this." So I sold an old motorcycle to finance a Thorn Raven-with-Rohloff, and have lived happily ever after. Derailleurs no longer haunt my dreams, and now I actually
look for hills. Tomorrow, f'r example, I'm going here, just to see how my trick new lower 36 x 17 combination works on 14% grades:
http://tinyurl.com/qdndq8kThe Eclipse sits in my workshop, its derailleurs silently grumbling and getting fat & dusty 'cos they rarely get much of a workout these days. Occasionally, I open the bars of the cage and go for a quick spin on level ground, then I lock them up again to reflect upon their misdeeds.