Quote PDF layout - displaying currency symbol and correct decimal places

Hi all,

I hope someone has had a similar problem and knows what the problem may be:

We need to send quotes which don't include VAT (tax) so rather than use the standard footer fields, I've created some custom elements:  {subtotal}, {shippingcost}, and a formula that adds them together.

The result of the formula does not display the number to 2 decimal places, I would have thought as we are adding 2 currency fields together, it would keep the formatting as per the other lines. For example, if the Subtotal is £90.00, the Shipping cost is £10.00, the result of the formula shows as £100 (it should be £100.00) - This may seem a small things but its irritating and doesn't look right when shown to customers when we're trying to win a sale.