3
Yes, that worked very good.
Will post the details here for others to benifit.
What I changed.
file
/public_html/XOOPS/modules/system/blocks/system_blocks.php
Line 594
Changed size="3" to size="4"
$block['theme_select'] = '<select name="xoops_theme_select" onchange="submit();" size="4">'.$theme_options.'</select>';
Thank You