Andrew, thanks for the thread.
I had actually raised my seat 20mm the other day and took my normal 30 mile ride. It was strange but my back sure hurt. So, this thread was perfect timing.
Got the info from Ves on my bike and where he said I should be fitted with 180 cranks. I then did a rough angle and saw with the new bike seat I was way high compared to
both comments. So, lowered my seat back to where I had it, the angle now seems to be around 150, and will do give my ride a try again this afternoon.
Dave