I got hit by a deer the other night. Pushed in a dish dent behind the cab at the front of the bed. It's a oil can dent. I'm on a fixed income, will a Harbor freight gun work do you think? I know you get what you pay for but price is an issue here. Any experience with these, any input would be appreciated. I tried heat and dry ice but there is a crease that runs the length of the box and the dent is real close to it.