It sounded like you doubted me there Jon, I'm nicknamed the Headmaster not the Bullshitter!
You can't expect to see everything in 4 years Jon, it's taken me over 20 years to learn all I know, & there are still big gaps.
It will be quicker to list what I haven't laid a spanner on, & that's SNP, SN, HSD, little model 40 F, LM & a kerosene Kingfisher though I've had a good look at all of those except the LM & the Kingfisher, the Cotswolds is a bit far for something that doesn't stimulate me & the gentleman researching those is doing a wonderful Job! & all the Kingfishers were for India I think.
Everything else I've probably owned!
Make it idiot proof and someone will make a better idiot.