Thanks, As for the feed problems, it seems like if i choose the wrong pulley range and still run it that's a big no no.
No sync between feed or spindle in threading, going to try some more tests.
Is it OK to see the the feed DRo change part way through the threading cycle, can't say I can see actual change but it is about 20% less than programmed feed for a good portion of the thread.
Ray.