As reported to the FAA. Reports are unverified, and codes are left as the FAA publishes them.
What was found
AFTER ROTATION, STAB TRIM CH 1 AND CH 2 AND MACH TRIM DISCONNECTED AND WOULDN'T RE-ENGAGE. PERFORMED QRH PROCEDURES AND RETURNED TO DENVER. FOUND CAPT'S DISCONNECT BUTTON WAS STICKY (ON YOKE). CLEANED AND CYCLED REPEATEDLY. SYSTEM FUNCTIONING NORMALLY NOW.