Make sure you also modify the table head.
Note also that the current default templates already include the model ref anyway:
modeltable.template
<tableclass="ModelTable"><tbody><trclass="ModelTableHead"><td>Model</td><td>Code</td><td>Retail</td><td>Weight</td><td>Stock</td><td>Information</td></tr> [TAG:TABLEROWS]</tbody></table>
modeltablerow.template
<tr><td>[Model:ModelName]</td><td>[Model:ModelRef]</td><td>[Model:UnitCost]</td><td>[Model:#Weight]</td><tdstyle="text-align:center">[Model:QtyStockSet]</td><td>[Model:Extra]</td></tr>
Regards
Rob