remove EXCERPT from "" URL in MarketPress

Hi again,

How can I remove or hide the product EXCERPTS from the MarketPress URLs:



../store/products/category ?
../store/products/tag/ ?

I'm populating the product posts using a server side include plug-in ( pulling in the contents from a file yet the excerpts field does not respond to this and displays the SSI plugin's short code instead; which does not work, hence this needs to go.

Many thanks