Shipping cost is wrong, how can I change it?

[brobal51]

I am shipping 1 tire and the shipping cost is way off. I already bought the first label.  It doesn't ship till tomorrow.  How can I go in and change the dimensions so the shipping costs reflect that? 

PLEASE HELP

[mtgraves7984]

Find the Order (Seller Hub/Orders/Paid and shipped) and use the drop-down menu to the left to 'Purchase another label'... enter the correct dimensions, weight, etc., and Purchase label.

Then go to your Labels page (Selling Hub/Orders/Shipping labels) and use the drop-down to 'Void label'. Afterthought... if it's USPS, they take about 3 weeks until you'll see the refund for the voided label.