Formatting gone mad?!

Why is it not formatting correctly?

[Courtman]

I am using the following HTML/PHP code:

<td width="30" class="tblText" align="right">
<?=$a_row[airframehrs]?>
</td>
<td width="30" class="tblText" align="right">
<?=$a_row[enginehrs]?>
</td>
<td width="25" class="tblText" align="right">
<?php
$hrstogo = ($a_row[tachoatchk] + 50) - $a_row[airframehrs];
print $hrstogo;
?>

However, the first two columns are not aligning right, but the third is. Am I missing something obvious here?

[dreamcatcher]

The third has no closing </td> tag. Have you checked your style sheet? Maybe something is overriding the formatting?

[Courtman]

Sorry, didn't copy the third </td> line, but that column works fine. There is nothing in the CSS that would cause it, to be sure I've even removed the CSS tag.

The only thing I can think of is that there is something weird coming from the table which is leaving spaces on the right of the number. Would that be an issue and can I strip them off?