Thanks Alex!
I find throwing out a "slightly" bad one painful
- will cull harder in the future - cheers.
Only had one stumble setting up guiding, not calibrating properly (too much of a hurry).
I have tried experimenting a little with much shorter exposure time but my PC would either crash PI or the whole thing when I tried stacking big stacks and DSS didn't produce as nice an output as PI when I tested that. I have since got a better CPU 5950x and 64G RAM. As soon as the clouds are gone I'll give it another go at 30 sec increments.