Trying many combinations - Align Normal and Align Draft, with/without deletng previous components, with/without deleting cache temp, not ar any point saving as a project, the Components produced are pretty consistent - no further improvement. If anything, Draft gets mostly 40 in the main Component, Normal gets 39. Why today it suddenly came up from 25 to 35 to 40 is unexplained - previous days’ similar tries it stayed consistent around 25.
I noticed that the no of files added to cache temp equals the no of photos in the project - 55, not increased by subsequent Aligns. Except that switching from e.g. Align Normal to Draft adds another 55 files - 110. Back to Normal does not add more files - remains 110.