I shall definitely steer away from the paint then! And in regerds to the split bolt, it's the hex-head bolt on top of the stem - leaving it slightly too large for any of my tools.

Tbh, this project has been very useful in establishing my comfort zone/limits with looking after bikes. It's definitely given me confidence in certain areas that were originally very daunting (e.g. derailleur maintenance), but also made me realise that this is very hard to do in my rather small flat. I'm looking forward to moving and having a dedicated area for this sort of thing, as I could see myself doing this a lot more in the future if this project turns out well

One thing it's made me realise, whatever tools I have, I always need more. I think I've been to the bike shop about 5 times in the last week. So much for a quick fixer-upper!