Here's a better view of the 'access' - so even with the engine out of the frame there still wouldn't be a straight path or enough space.
it's the slippage i was thinking of - I wouldn't use that ball-end Andy, find a way to get the full surface area somehow.
surface area is surface area.. are those the exhaust clamps with a gap behind them? I think you will be fine. You can't run the engine now can you? A bit of local heat would help in between dousing, you know this of course.
I took your advice and managed to undo both bolts. I'd previously bought an articulated allen key socket which also didn't fit until I decided to cut the key length down to a stub. It then just about fitted and a little bit of pressure with a breaker bar cracked 'em loose - hurrah! If the truth be known the bolts weren't in very tight at all and as can be seen the threads in the head are clean as a whistle and any seizure was due to the serrated washers.
