Originally Posted by
Retro Grouch
If you'll be satisfied with "OK" shifting try this:
1. Use your derailleur's limit screws to eliminate either your biggest or smallest rear cog...
He said it clicks into the smallest and largest cogs now, though. So the limit screw will just keep the shifter from clicking into the number one or number seven position. Then he'll have seven speeds and six stops instead of eight speeds and seven stops.
EDIT: OK, this is wrong. The limit screws on the derailleur keep the shifter from going into first gear.