B wrote:
maybe I worded it incorrectly...
what I would like is the 10 most common repairs that come through the
shops
and on top of that the most difficult and time consuming.


Repairs don't come through shops, problems do: "I've got a flat. I've
got a wierd noise. I can't shift. I want to be more upright."

Difficutly has little to do with the type of repair, everything to do
with the specific circumstances (age/type of bike, parts on hand,
customer's time and financial constraints, etc.). Same for time
required per repair.

-Vee