You could take the point value of 1, 2, 3 ( is not not 0, 1, 2?) and use the "multiplicator" (if I understand how it works) of some bizarre decimal value and convert the points to the final point value you want. It may not come out to 88, 95, and 100 precisely so you might have to change your values to fit Moodle.
I make my own scales so much of the automated grading does not work for me anyway.