I'm not sure why it ate the clutches but filling the cooler with trash will block the lube to the rear support. Have you been flushing or replacing the cooler after trashing the clutches prior? You should also have the converter cleaned out as the same trash will remain in there. Possibly a cumulative effect.

"Follow me the wise man said, but he walked behind"


'92 D250 Club Cab CTD, 47RH conversion, pump tweaks, injectors, rear disc and hydroboost conversion.
'74 W200 Crew Cab 360, NV4500, D44, D60 and NP205 divorced transfer case. Rear disc and hydroboost conversion.
2019 1500 Long Horn Crew Cab 4WD, 5.7 Hemi.