I did mine in mspaint, from screengrabs and it took me 4 or 5 goes to get it right. What I did to check it was copy the original bitmap and then paste it underneath offset by 1 or more characters, and then see if it lines up. If it doesn't, make a correction and then do it all again. For instance I can see in yours that you have mostly 1 pixel gaps, except in some places where there are 2 pixel gaps. Check out the attachment.
You can see things line up in the letters until you hit O and then it all goes wrong. But you need to check the digits too. Looks like the correct spacing is 14, but it might be 13 or 15, I didn't spend too much time on it.
Jim