Job truncates text data type

I have a table with a text data type and when I run my sql manually,
everything works fine - the text column is completely filled with what
I need (it's html from a http post request via a stored procedure).
When I put the exact same SQL inside a job, and kick the job off (or
let the agent pick it up on the schedule), it truncates the text column
to a width of 498, rendering my later job steps useless b/c the
expected data isn't there.
Why would the job cutoff the text in this column?What is the syntax used in the proc? Are you issuing an update/insert
or a writetext/updatetext statement?