Son1of Rover1, re your message at #32, this is what I was alluding to in my post at #16. The symbol required for 36ac is slightly different from that required for 36dn. The same applies to cell 24.
Given the variations in handwriting and the size of the symbols in the cells, I don't suppose the minor differences matter very much.
The symbol in cell 31 is not he same. Check the internet.