Thanks all...
The lines are new this season but i will clean them with whizz lube or similar and also the rod/rings to see if this improves matters.
I have also left a message for my local instructor and will arrange a couple of hours casting tuition to see if he can spot where i am going wrong. Hopefully this will improve my technique if nothing else.
In terms of XP rods, I have used these ever since i started fly fishing.
I have not really tried anything else as the instructor i first had lessons with told me they were fantastic rods and if the price was right, i couldn't go wrong.
I then proceeded to kit myself out with a variety of XP & Z-axis rods for all occassions. Maybe this is was a mistake?
Saying that, I LOVE my 9ft 3wt.. It feels fantastic