Rich,
I have read your Threading on The Lathe pdf.file, very good Reading, thank you!
I am using version R3.043.066.
Yes I click on the calculate button and the feedrate is within range.
The rpm DRO is steady on 227 rpm all the time.
The thing is that everything was working perfectly for a couple of months ago, this is a bit frustrating.
I attached the files.
Per