A reader asks about possible fork damage after a close encounter of the low clearance kind.

Can I use Campy 10-speed shifters with 11-speed derailleurs?

Can I use a Campy 9-speed rear derailleur with a 10-speed drivetrain?

Can I use a Shimano 7900 chain with a 7800 rear derailleur?

Can I use a Dura-Ace 7900 crank with a 9-speed drivetrain?

Can I mix SRAM XX parts with SRAM road parts?

Are Shimano road and MTB external bottom brackets interchangeable?

Are Ultegra 6700 parts compatible with Ultegra 6600?

Are Shimano external bottom brackets interchangeable?

Should I rebuild my Campy 8-speed shifter, or switch to 10-speed?