Are you still looking? And if so, when do you want him? We have two registered GFD rams and our older one (born 2008) might fit your requirements. We will use him again this year but if you are looking to lamb later (say in April) he could service our ewes and then move on to yours. This is his second year with us and we need to introduce a new ram to service his lambs from two seasons.
I can supply the details if you are interested, but he sired the 2012 Champion GFD ram so there is nothing wrong with his bloodlines and he has proven more than able of handling 20 or so ewes with a lambing ratio of 1.4 or thereabouts.
We will be registering one or two of our ram lambs this year and looking for another GFD ram in the meantime.
Drop me a PM if you want to discuss in greater detail - we are in West Wales.
Steve