Cylinder Head nut tightening

[mikebro]

I will shortly be retightening the cylinder head nuts on my recently rebuilt 100A engine. Last time I did this, I had to take the carburetters off to get at two of the right hand side nuts (the ones that need a socket, not the ones that use the cranked spanner) as they are underneath the front and rear carb mounting brackets. Has anyone managed to get at these with a modified socket or whatever, and if so, could you detail? The carbs are nicely set up now, and I don't want to disturb them unless I have to. Thanks in advance....