Been altering the accuracy setting on various 3rd party addon Helo's and whilst it seems to work for the majority of them, it seems to change their in-game name back to the default OFP one, i.e. Coogars AH-1G is shown as AH1 again 'etc'.
Unfortunately changing the accuracy also doesn't seem to make the West Machinegunners attack the Mi-24 or the V-80, just the Mi-17.
I'll experiment with a few other settings, such as cost and threat values to see what happens.