I'm using WordPad to make my edits to the text files.
Under the "View" menu in Wordpad you'll see options, click that and then select "No Wrap"
That will allow the numbers to all line up and it's much easier to insert your offset information. You can have more than one line of offset information, so if you wanted to have a time offset as well as a position offset, you'd just put that info under the position offset text.
In your sample I see you still have a line of offset instructions above the "latitude, longitutde, altitude---etc" line.
The offset info goes after that line. That could be what's screwing things up for you.
View attachment 2944
I trimmed the image to make the file size smaller so all the information being captured doesn't show in the screenshot.