Hello all, I have a very quick question. Any BTDT's relative to un-freezing brake calipers on an 88 5ksq? My trusted wrench (non-Audi) says he's tried to move the pistons...but to no avail. Any advice or low-tech tricks? TIA and have a good weekend. Regards; George B. 84 4ksq 88 5ksq Massachusetts