Thanks for the quick reply jp

I have sorted it

it was me being a nob, er sorry ment to write noob at reason.

When the tracks were written there is an area at the start of the arangement where the parts are written, then the track starts later on. I was trying to export the audio as loops with the loop markers set around the track.

When I exported the stems as songs the timing issues are resolved :)

now i can get on with the task at hand.