some awsome news guys.
i figured out what the problem is. all of my motors were lagging a bit from vibration, but only by about 50-100 rpm.
the real problem was my starboard motor. it runs about 550 rpm slower than the rest. i have swapped speed controls, swapped motors, swapped gearboxes, and it's definatly the motor. it was running 550 rpm slower, and at full throttle while the other motors were not. so, when my motor was lagging, i trimmed it to stay neutral. the motor could not go any faster, so what my trim did was slow down the other motor about 500 rpm to match it. then, this caused a torque effect. so when i gave it rudder, it slowed down the other motor to compensate. it was a chain reaction. this does not fix my gyro problem, but it could make this a lot easier to fly. we'll see.