Starting to sound like people don't know how to work with vinyl. A touch big is no problem just tuck the edges. I've got a feeling the people that had problems are not useing the soapy water and heat gun/hair drier.
My vinyl install kit includes:
bottle of soapy water
If you didn't use any of this, you did it wrong. The only time I have to cut anything is when I do a custom vinyl wrap. I have never had to cut a kit, from Bat or otherwise. Not a flame just an FYI.