Automatic Bombing

So i build a simple mechanism that allows you to drop bombs from a plane by holding down one button. But since it's a prototype it has some minor bugs that i can't seem to fix... So im just gonna upload the mechanism and hope someone around here takes the time to fix the bugs and create a usable version. The most annoying bugs are:
1. Bombs randomly fall out
2. Bombs explode when our plane changes speed to fast
3. I haven't found a release mechanism that doens't randomly crushes a bomb when closing and explodes the whole thing.

If someone could fix these bugs and upload their finished creation i would be very grateful.