:-) you really are tearing through these @LordNeilLord - fantastic to see you working through 2 & 3 a day.
Not sure if you've been following the banter but there's a few folk who have done all the available challenges so-far, so there's quite a tight competition going to see who will be the first to earn the legendary "75 challenges" badge. With the pace you're going, you could be in contention (from what it looks like, you're on your way to 50 now?)
I downloaded four weekly challenge starter files (25,26,27 and 28) for my 11.5-hour flight from London to San Diego yesterday, and this was the first one I tackled. It also took me the longest. It was a bit tricky, but once I figured out I needed a record ID before my Transpose tool it made the sorting easy!