@ toniloCoyote
That is a great list of information you have gathered there

For me, i am going to check this v RM as a % scale of error.
This will point out any lengths needing changed in the RM
For the mastheight etc - i have not yet come apon any problems here.
The stadi fix was finished some time ago and I'm sure someone would have noticed problems if they were wrong.
They may not be precise, but remember the ruler can only measure to the nearest 50m so how precise do they need to be