Hello, I have been maintaining bicycles professionally since 1993……..just over 25 years! And a few years before that as child too. Taking my bike apart in the garden as a kid, just to understand how it works. Not much has changed, I'm still taking new bike components apart to find out how they work. I'm just now doing it in an equipped workshop. Having worked in a few well known and respected bike shops in and around London and Kent, achieving Cytech level 2 qualification in bicycle maintenance.