Sorting not working on a string field

[noel]

Hello, I seem to be having a problem with sorting. I have a string field 
(time_code) that I want to order by. When the results come up, it displays the 
results differently from relevance which I would assume, but the results aren't 
ordered. The data in time_code came from a numeric decimal with a six digit 
precision if that makes a difference(ex: 1.000000).

Here is the query I give it:

q=ceremony+AND+presentation_id%3A296+AND+type%3Ablob&amp;version=1.3&amp;json.nl=map&amp;rows=100000&amp;start=0&amp;wt=json&amp;hl=true&amp;hl.fl=text&amp;hl.simple.pre=<span+class%3D"hl">&amp;hl.simple.post=<%2Fspan>&amp;hl.fragsize=0&amp;hl.mergeContiguous=false&amp;&sort=time_code+asc


And here's the field schema:

<field name="presentation_id" type="sint" indexed="true" stored="true"/>
<field name="asset_id" type="sint" indexed="true" stored="true"/>
<field name="type" type="text" indexed="true" stored="true"/>
<field name="text" type="text" indexed="true" stored="true" multiValued="true"/>
<field name="time_code" type="string" indexed="true" stored="true"/>
<field name="unique_key" type="string" indexed="true" stored="true"/>
<dynamicField name="*" type="text" indexed="true" stored="true"/>
<field name="all_text" type="text" indexed="true" stored="true" 
allowDups="true" multiValued="true"/>
<copyField source="*" dest="all_text"/>
<field name="text_dup" type="textSpell" indexed="true" stored="true" 
allowDups="true"/>
<copyField source="text" dest="text_dup"/>

Thanks for any help.