Well, inlet manifold extremly gooed up, but not the fault, when we took off the turbo we could have a good look at it, although the waste gate was operating it was tight just before the closed postion, a bit of gentle persuasion got the thing working fully, fitted all back together, what a difference! only hope it doesn't sieze again!
Thanks for all the input, hope this helps someone else sometime!
Phrom Fill.