Anyway, I'm all done! I'm pretty proud of it too:
Funny story actually. I wanted to get this picture of my son in front of it, but I couldn't find him. Then the Guardian gets all misty and he comes jumping through. Whatever. But then I notice these Messerschmitts flying overhead. I'm thinking "those air show people could be a little more culturally sensitive" but the planes kept coming!
Long story short: somehow my son had gone back in time and prevented Joan Collins from being born which in turn caused the Germans to win World War Two. Who knew? Also, it meant "Dynasty" never got made.
Anyway, it took some doing, but everything should be back to normal now with the timeline. Still though, I should probably put a gate around it or something just to be safe.