Rating Scale

Hi,
Most of my well wishers told me that the scale of rating the horses is too narrow for comfort.Hence I'm widening the scale of rating as under.But the essence & rationale behind the rating method remain same as mentioned in my earlier post. The only difference is each class is allotted 10 points, akin to 10 kgs per class.
CL V 50 to 59
CL IV 60 to 69
CL III 70 to 79
CL II 80 to 89
CL I 90 to 99
Classics/Graded 100 & above.
Madhu.