Well couldnt take it any more Im afraid.
Bought a Asus Sabertooth.
STill get some missing memory issues. Which is very common I believe in ALL X58 boards due to the memory controller being on the CPU.
My memory modules defo appear on their compatability list.
This board does run a lot smoother than the UD3R though.
Will try to RMA the board to Gigabyte again !!!!!!!!!!!!
Shame though it couldnt be sorted after 10 months of trying
Hope it works out for others though in the future.
Many thanks Dark Mantis for all your patience and help though