so im beginning to build a drop in, and need it to be fully collapseable in order to fit in a small car. i have the basic gist down, there are just a few things im confused on... 1. if i use chains, what are the odds of the chains snapping? or the dropin just caving in? 2. with the 3 pieces top ladder and ramp, in what possible way can i make that fold flat or close to it? and any other suggestions you have are also good.