My bike fell over whilst unattended in the garden - silly me. I now find that the shifter for the rear mech only gives me nine of the gears. I loosened the cable off and adjusted the limiter screws, then reattached the cable on the smallest rear cog. After reattaching the cable, I then shifted to gear three (R-L) and used the barrel adjuster to fine tune the alignment. The bike shifts up to gear 9 - the next to biggest cog -but won't shift into the tenth cog. I tried detaching the derailleur and holding the cable tight and find that the shifter seems to have lost a gear position. It did have a whack, I had to loosen it off & straighten it after the fall. The answer I am driven to is that something snapped off inside the shifter, and I now only have 9 speeds. Could that be correct ? Any other ideas from the CC cognoscenti please ? TIA !