It's a Mopar problem because they insist on putting phenolic pistons in the calipers which don't stay round over time and stick. Had the same issue on a Jeep awhile back. Put rebuilt calipers with metal pistons on and never had another problem.
Oh God, not that again. IIRC, they used phenolic pistons in the early '70's single piston disc brake calipers. Same result. Fix was to replace all the phenolic pistons with steel pistons. Apparently some lessons have to be learned over.
"We live in a time when intelligent people are being silenced so that stupid people won't be offended".
