I'm sure Ill be corrected... I believe I read here somewhere that if the shoes are too loose, they have too far to travel and then the self-energizing aspect grabs them and locks up the wheel. Make sure the shoes are adjusted properly and they will energize gradually.

Current fleet (subject to change w/o notice)
\'49 GMC 3/4-Ton , 60 Austin Healey Frog-eye Sprite (some assembly required), 2011 Dodge Avenger, 2015 Jeep Cherokee. No, they don't all run.
My other ride is a (B737)no, (B767)no, A320.... Update... was Embraer E190, now Boeing B787.

Knowledge is a wonderful thing, but ignorance means you don't know you can't do something.