Overproduction Percentage For Work Order/Sales Order

Hi ERPNext Community
I work in a company that manufactures electrical cables and wires
I encountered a problem, when making a work order and the quantity to be manufactured is 2000 meters according to the sales order, and when manufacturing, the quantity is often produced at a fixed quantity of 2000 meters, due to the tolerance ratio ±, which means the quantity can increase or decrease by 10%, for example, And when I enter the finished goods for the stock entry, I cannot modify the quantity produced. When adjusting the quantity, the quantities of raw materials must be taken into account in the event of an increase or decrease in the produced quantity.
I have configured the Manufacturing settings as follows:

What is the logical Solution ?
I apologize that the translation has lost some details.
hoping to get a solution for this