Thankyou gentlemen,
Have checked headstock to lathe, I'm 14stone odd and can't move it when
tightened, and have tried two different faceplates with long and short #8's
in an attempt to isolate the problem
The lathe (M900) has a home made shelf under with 50k of cement in bags (a
hint from this newsgroup) and is rawbolted to a concrete (bloody cold) slab
floor.
Even turning small items I can see the eccentricity.

Phil

"Derek Hartzell" wrote in message
...
Is it possible that the connection of the lathe to the bed is a source of
trouble?

Derek