TrailRunner said..
I believe the only real difference between the masts (apart from flex and efficiency) is the mast angle of attack. you can change this with a +1? base plate shim.
And youd be only totally wrong.. The new masts difference is not restricted to just a rake angle.
anyhow . yeh running a mast shim will sort the rake angle. Know crew using the MAs on the A plus mast - its as good as the mast will allow. Consider the 235 as your tail for the Ma 1225 wing size and bigger.