Foul,
I applaud you for tackling this scenario I played this in it's original form some years ago as the Allies then and it was awful.
What I mean is there was no historic defeat here for the Allies, a close thing perhaps but no defeat. While I understand wargames must have playability and you have attempted to create this I still feel that the emphasis of this battle must be on the Axis to drive the Allies back into the sea and destroy the bridgehead, that I believe was their task.
I appreciate this is a difficult matter and is hard to create a perfect scenario but reading some previous posts here it would seem at least one other has struggled to get a draw.
I am unconcerned re the outcome of my particular battle and I am merely pointing this out that I believe this scenario still needs a little work for future players to appreciate it.
I will try to post some screen captures later when the scenario is concluded which may help you decide.
Gordon