Honestly, if you're a decent English writer, you'll never use "kinda/sorta" unless you are quoting someone (ie. someone who is poorly-educated or lazy in speech). You really don't need to define a difference unless you're a very advanced writer.

I agree that kinda sorta are the same. I believe that there are times that anyone can not speak perfectly. There is a time fore everything. We are allowed to be relaxed and speak in a relaxed way. Sometimes it is even ok to be lazy. How strongly do I feel this way? Kinda strongly. Sorta sternly. Oh look! a difference. Kinda sounds better in front of your adjective, sorta before.

neither one. kind of or sort of.