So my tricopter has been flying great the last week, i had to go and adjust the gyros and it seemed unstable in the air and took a hard landing. Then one of my motors started to do the thing where it jerks real hard as if trying to move but there is something stopping it. I thought i could be a bad connection somewhere but i couldnt find one. I un plugged one of my other motors that was working and then put the motor with the issue on that esc, it still didnt work., I then plugged the old motor that worked back into its spot, and now that one wont work. Can someone please! help me, i really want to get it flying again on this beautiful day when i have no school.