Took the truck to the dealer today...
"FOUND THE TSB 23-011-09 APPLICABLE TO VEHICLE. TRIED TO TORQUE FASTENERS TO SOLVE PROBLEM BUT PROBLEM STILL EXISTS. TSB STATES TO REPLACE SEAT ADJUSTER ASSEMBLY"
You can check the TSB here:
Interesting that the TSB is from '09 but my truck was built '11, think this would have been fixed by then? Also, TSB states: This bulletin applies to vehicles with sales codes (JP8 or JRT) and built before March 13, 2009 (MDH 0313XX).
Part has 2 week lead time so I'll take it back then.