sorry if this is dumb but what will move around because of high rpm???

also i just went and looked at the wires the best i could and held the throttle wide open and wiggled wires and it never flinched or anything. maybe it just got some dirt or something in the throttle servo and froze it for a little bit, but i'm pretty sure i loss control of steering too. it didn't last very long. but did it about 3 - 4 times. not all of them was loss of total control, like when i gave it throttle it would act like it was getting full power when i was giving it at least 3/4 throttle and then i would act fine. my engine wasn't too hot i don't think, its where it always is. and i wasn't making long high speed runs, i was playing in real dirty area, jumping my little hills i got made.

and also will it be okay to keep using the throttle servo with the front screw mounts cracked?? it seems to not be loose or anything.