Can I take this opportunity to Thank JesterRT for his excellent guide in the Maintenance Section
I couldn't have done the job without it!

This is just one small instance of why the OOF is the really Great place it is. 
once again, this is the bit that got me. And I'll say it again. Bet he could
As you have no information regarding his abilities, previous knowledge, tool availability etc etc .. you canot really make such a claim.
YOU might be able to do things by guesswork .. many others of us lack the ability to read the minds of designers/enginers, and so welcome guides, no matter how mundane they appear to you.
I would suggest that a 7 year old would be unable to change a set of sparkplugs on a Morris Minor without guidance... once given that guidance may well enble that person to change the plugs on a ford cortina when aged 22 .. as they have LEARNED how to do the job ..
Now I have changed a set of wishbones, a set of track rod ends, and a pair of drop links .. yes, I could do thoswe jobs AGAIN without guidance ... but certainly not the FIRST time.
Not all of us are "experts", although many on the forum like to think they are.