I recently developed a case of the jellos very suddenly and now all my video footage is pretty much useless. Visibly and sonically as far as I can tell when the bird is running all looks well, but upon closer inspection the rear left motor seems to have a little "shimmy" or play from side to side the others don't have.it is very minimal not even a mm or half a mm just slight the others don't display. Do the bolts on the side influence this movement or are there other bolts that hold the motor tightly in place? I think they are allen bolts, pretty tiny so I can't tell the size yet. Any other places I should look at?