Need To Remove Extra Spaces In Query Output

I'm using the following command:

osql -E -n -d testdb -i testquery.qry -o "c:Scriptsoutput.txt" -h-1 -w 500 -s ","

With the following query (testquery.qry):

SET NOCOUNT ON
SELECT table1.column5, table2.column9
FROM table1, table2
WHERE table1.column4 = table2.column4
AND table1.column1 != "NULL"
ORDER BY table1.column5

All of the columns are cast as char up to 50 characters.

Even if only a field has a few characters, I get a lot of extra white space in my output. I want to get rid of those trailing spaces. I've tried SET ANSI_PADDING OFF, RTRIM(), and CAST(x AS VARCHAR(y)). I still get the same output. What am I doing wrong, what am I missing?