Hello Paul,
Have you been able to resolve your issue ? Did you have a time to take a look at the attached sample. Let me know if you have any questions.
Regards
I try to reproduce your scenario in a small sample. Could you please take a look at the attached project for more details and let me know if you have any questions,
Regrads
Attached is the screen shot.
Could you please try to upload again your attachment, because we didin`t received it. Please zip your file and using "Insert Madia" button (during you are replay to this post ) to attache it again or using "Option" tab to attached your files.
Thanks and Regards