Should be fine....because when you clamp
it down, the new nuts will still grab the plastic at the new point. You may want to use a very thin washer behind the nut to prevent it from pulling through the hole.
I messed mine up a bit too so I just carefully enlarged the hole in the direction I wanted the pedal to go. The screws hold fine as long as the nut doens't fall through the hole.
If you need thin washers, go to a local R/C hobby shop since they specialize and small hardware for those types of cars.