Hi,
1. Make sure the custom page size is set according to the size of the cheque
2. Make sure the positions of the text (Payable To, Dollars, Numeric
dollars, A/C Payee only, etc) are where they should be.
3. Print
Note: You may need to get the positions by trial and error. So make sure
that you try it with some expired cheques, or try to use papers cut up to the
size of the cheques.