Just buy some damn oven cleaner and spend 30mins cleaning the thing out rather than--
1-wasting a bunch of energy heating the oven to 500+ degrees
2-filling the house with stank ass smoke from burning off all the oven leavins
3-possibly burning a heating element like my mom's oven did the 2nd time she ran the cleaning mode
self cleanin is stupid
if it aint broke, tweak it!!
currently on FiOS (kick aZZ!)