this is frustrating, I was on the trainer, and you know, just fine tuning the rear derailleur using the barrel adjuster on the downtube .(was this wrong to do?) and then noticed once I got the clanking stopped, I went through all the gears, everything is fine except when I get to the second to smallest cog, and go to shift to the smallest cog, it just doesnt go, I press the lever but it doesnt click, and doesnt move the chain, its like the feeling when you go to the smallest cog and press to go smaller and it moves the lever but nothing happens.
how can I fix this! I have a race coming up and dont want to have to lug the bike to the shop... in the meantime Ill go try to fix it again until I get some replies.
PLEASE HELP! thanks! Im used to riding track bikes so allthe fancy adjustments on my road bike are new to me.