MarketPress Product Categories display

Hello WPMU Dev,

Simple question, I have looked around but cannot find the answer to this, so apologies in advance if Ihave missed something obvious.

For the MarketPress 'Product Categorie' widget, when it is displayed the space between the menu item lines is too great, how can I reduce this? e.g.

Currently:
Accessories
<unwanted space between parent to child category>
Connectors

Want the following:
Accessories
Connectors

Kind regards,
Yusef