Gotta say fair play to the mapper..
I know Karl spent fuckin ages on Tiff's and Popeyes cars to perfect the "Gunship" map. I know its a bit different as its very dependant on the engine as to whether you can have a "Gunship" style map.
But why should all Karls R+D be available to any tom,dick and harry to plug into any car.
Personally- if the new mapper is any good he should already have a resonable base map of his own for the specific spec of car your mate has.
He would need a good base anyway to be able to start the car and go from there.
He should then work with the map from there.
If someone elses map is faulty or not up to the job to start with- why go over and correct other peoples mistakes when he can simply go from his own already free from errors base map.
In my opinion of course.
Ultimatly it doesn't matter a shite what the masses of people say on an internet forum. Its down to the customer and mapper.
Jake