Manual TDC - Range is a problem

[Reece]

Hi, I have come a long way & now have no problems calculating AOB manually & using the wheel confirms the result. The big problem is the stadimeter, to calculate the course I need the range & preferably from a distace to get 2 or more plots, I was having so much trouble that I changed realism to update map just to check out if calculations are correct, they are way out!! Using zoom & trying to set the height is the problem I think, I'm sure I'm doing everything correctly, I wonder, since I'm using over 80 mods, if the zoom has been changed & not correct, I know there are mods to change this, could this be a problem & if so what files do I look for to remove/fix?
Is there another way to calculate the range just to set the course, I assume I will still have to use the stadimeter to be able to "automate" the TDC, I noted that pressing the manual swith, the TDC is no longer functioning, can I change the range here the press switch back again?
So far after several hours I have only made 1 hit & that is probably a fluke!
I can make the calculations in plenty of time now but the range is always way out!
Many thanks.
Reece.