Individual Event Options in Shopping Cart

I would like to use the shopping cart feature but it applies all my custom fields to every event in the cart.

I use a custom field to specify different ticket types and amounts.

So lets just say I have set amount of the event for $100 and a custom drop down field for all events with

Ticket A 0
Ticket B -25
Ticket C -50

The customer way want a Ticket A for event 1 in cart and ticket B for event two in car, but as it is now you only run through choices once for the custom fields for all in the shopping and not for each event.

I hope that makes sense.