Hi
@stevegibbs - I know this post is from a long time ago but I am have an identical issue and have been pulling my hair out trying to work it out. If you are still out there, please let me know what the conclusion was?
Regards James
This thread is a little old now but if anyone is still out there, do you have a solution to the issue mention. I have excatly the same fault and cannot for the life of me figure it out.