the code on the cart.php page for the h2 tag is:
<h2 title="<?php if (strlen($WA_Store_Cart->DisplayInfo("Name")) > 11) echo ($WA_Store_Cart->DisplayInfo("Name")); ?>">
<?php echo substr($WA_Store_Cart->DisplayInfo("Name"), 0, 8); ?>
<?php if (strlen($WA_Store_Cart->DisplayInfo("Name")) > 11) echo "..."; ?></h2>
if you want to remove the truncation all together, change it to:
<h2 title="<?php if (strlen($WA_Store_Cart->DisplayInfo("Name")) > 11) echo ($WA_Store_Cart->DisplayInfo("Name")); ?>">
<?php echo($WA_Store_Cart->DisplayInfo("Name")); ?>
</h2>
other wise, cahnge the number 8 in the following to the number of characters you wish to allow:
<?php echo substr($WA_Store_Cart->DisplayInfo("Name"), 0, 8); ?>