Note: Keep in mind: the size of the default scale that's in use before you edit is from the base of the ground to the top outside of MC's helmet. Enter the number you found in step 4 in the 'scale' box.
pdo file, and go to the 'scale' and then 'scale factor'. You can use this formula to determine how big you should make your armor: The Master Chief is 7'2' tall (86 inches).