After finishing rebuild I decided to check tappet clearances one final time and found to my horror that 2 of the tappet covers wouldn't shift by more than half a turn, they had only been fitted a few days!! After much consternation, frustration and cursing I removed the camshaft cover totally and carefully cut the offending items in such a way that they could be removed.
Unfortunately, the threads within the camshaft cover are partially clogged with broken tappet cover thread which was crumbling and causing it all to jam up, I am not able just to hook out the broken bits as it all seems virtually welded in!
Anyone know if 30mm taps are available to hire? Or any other suggestions to get around this.
If push comes to shove I do have another cover but that will need to go for vapour blasting before use, hoping to find a cheaper / easier option first!
Thanks