The reason I ask is that the grinding seems to have increased markedly since two week-ends ago, when I gave it all a thorough washdown. I washed everything with water and Simple Green, dried it, lubed the chain with Finish Line Cross Country, and (brace yourself) sprayed WD40 (no groans, please) on everything else. I know many people consider WD40 taboo, but I used it because I also heard it was a good moisture displacer, and I was worried about moisture from the washdown freezing once the bike got back out in the cold. (I was washing it in the warm house.) Was that a really, really bad thing to do?
I also used quite a bit a Cross Country on the chain, maybe more than was necessary. Does any of this sound like it might have increased my grinding problem, or is it just coincidence? If any of these things, what can I do about it now? Or just get a new chain, and maybe other things? What did I do wrong, and why was it wrong?