Thanks Brian,
One of the problems is solved and I think I know what the other is, first one was not cutting smooth, that was caused by me having the CV FEEDRATE button check at + 10, as soon as I turned it off bingo smooth and faster cuts, Second is the marking on the wood, I have 12mm bars carrying my zaxis and there is a slight amount of flexing so, I think I will go and get some 18/19 mm bars and do a re-build in that area, not all the marking has gone but it is a lot better.
Kind Regards
Bill