Just seen this. Yes, I do need the quotes. Of course it is claimed the adjustments are all above board, but this is certainly questionable as to whether this is always the case. Were data adjustments made prior to developing a model then that is one thing. Adjusting the data afterwards is entirely different. It's very dubious science to develop a model, find it doesn't fit a particular data set and then look for ways you can justify adjusting the base data.
It smacks of bias or lack of objectivity: "We know we are right so we will adjust the data to support our theory, and we need to find a justification for the adjustments". As opposed to "We're being completely objective and the model doesn't seem to fit the data, so let's try to understand why that might be the case. Might the model be flawed?".