Sum Average measure issue

Hi All,

I have a hierarchy with 5 levels: leaf level is question and above is Model level etc. 

I have a calculated measure that presents the score of average

Description of the measures in the table:

1. Calc : score per question
2. Calc by model : total score of all questions in the model
3. Calc by model percentage :    Calc / Calc by model
4. Average score : average score of all transactions in the table (Type of measure : Average)
5. Calc Total Score : Average score *  Calc by model percentage

As you can see when the measure is in the leaf level of question the calculation of Calc Total Score is good

but when the measure calc the level above (Model level) i get the value of 70 instead of 62.67 (24.88+37.79)

If someone can help me with dax function to sum it up correctly I'll be thanks :)