i have sora components. You mentioned the shifter for the front rings jamming. I think something similar happens to me when I don't give it a full shift, it will get caught in the middle. If that is what you are referring to, keep pedaling and push and hold the shifter a second or 2 longer. You have to push the shifter as far as it can go...It should right itself. I have had it stuck between shifts and I just reshift or go back to the gear that you were just in.
I hope that helps.
james.