Judicious adjustments are by definition good. But he wants to go around corners - that will require butchering, not judicious adjustment, and even after half the mechanism has been butchered it still will not work well.
while I agree with the idea that it is his model and he can trash it if he wants, he did ask for our advice, and apparently is happy with our contributions. He will use our input and do as he wants in the end.
Here is what I think is injudicious about this: it will require removing significant metal from the cast frame, both fore and aft. It will require removing about half of the lower portion of the cylinder block - easy, because the cylinder is probably a built-up unit. It will require flange removal.
And it still won't work well, because scale flanges do not match O72 track. There is a reason for those huge flanges on tinplate trains.
All opinion.
