Hi all,
It wasn't the fly sheet that was sagging, it was the inner tent, which has no guide ropes, only a couple of peg-downs.
It kept the rain (and I had a lot) out though, but I'd love to know what was going on with that. I "could" have pulled it a bit tighter, but not that tight. Going to check few videos of the "Soul 200" as it's almost the same tent I believe and see if I can see the insides. Either way, I survived cold weather, rain, in a field by myself, so IO know spring/summer camping is for me too
Job done!