Oh god. Don't apologise. Not needed. You were right on both occasions and I was not offended in any way what so ever. :) all good !Sorry @Lesley but I didn't mean that to come across as a 'told you so' post.
I started typing a response explaining that I had exactly the same issue with the weir too high - I was due to go into a meeting and remembered that I had already outlined my situation previously - I found the earlier post and pasted the link.
In hindsight, it was probably not the most appropriate thing I could have done.