As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
DIVERTED TO STL DUE TO INTERMITTENT AIRFRAME VIBRATION ABOVE 270KTS, SLOWED TO 250KTS AND VIBRATION STOPPED. FOUND RIGHT NOSE GEAR DOOR GAP MUCH LARGER THAN LEFT NOSE GEAR DOOR GAP, ADJUSTED GAP ON RIGHT DOOR AND PERFORMED PRELOAD CHECK AND FINAL ADJUSTMENT.(7842924)