What you are describing is how many of us older persons started mending our cars. From the late 60s onwards we purchased assorted tools(Britool spanners etc. No metric nonsenses, which means they are all redundant now) and a Haynes manual and set about removing the cylinder head from out mini 😱.
Fun or not whilst it lasted, but it has given me a hatred of bike mechanics, I honestly cannot be effed with it. Chuck the bike in the shed till it breaks and I’m forced to get my BS spanners out 🫣.
Why I loved fell running, simple and no mechanics.