Well done, Dan. Good choice to move to Xenforo as vBulletin is dead software.
You are probably already aware that you need to tweak the style slightly.
When logged in, the sidebar is pushed down the bottom. Also the 'new' post indicator needs moving to the left. Reduce the margin-right on it. Try -15px.
If you can all have some patience and just hang in there and not suggest things or let me know what's not working until I say GO! Or something that'd save some time and get things actually fixed a bit quicker
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