Great and thanks a lot everyone. Found there was recent post re bonnet problem, but I can't remove plastic trims as all my phillip head dont fit directly into screws.
Secondly, was able to remove cams although exhaust one was difficult to remove as it seemed to be stuck. Yes I did undo/removed all caps

but I had to go eurocarparts to obtain a breaker bar to undo bolts. Delivery takes about 4 days, so nothing doing untill then.
I also saw some brown stuff on some of the lobes, appears to be like burn marks. Any ideas what these are and is there a prolem with cams now or how can they be removed
Appreciation in advance.