Does front drum need replacing?? I am starting to gather parts for a '54 cad trans rebuild. (smells burnt) Will be going into a '50 Cad behind a '58 Cad 365. The victim transmission was built for the strip. Came without belhousing so do not know it's last application. I need to go back stock. I have '55 chevy truck and '54 Lincoln Hydra matics for donors. I think I now have the correct front, rear, inner and outer valve body assemblies. for a '54 cad. The next Question, is that with valve bodies removed from the Cad and Lincoln, it looks like there are fine groves in the front drums. where the band rides. They both look like they were turned on a lathe. All the drums I have seen, that have been removed are smooth as a baby's' bottom. So are the groves a result rebuilder machine work, or from the front band slipping? Do they need replacing? (front band screws are cranked down more than normal) Sad but from what I have seen, all drums that have been removed and "stored inside" are rusty.. Parts Have 9 new stock paper and cork wavy frictions and a few rabestos and a pair of Dynaflow "grip right now" frictions. Pair of good bands from a "55 olds,. I have the Paul Marsh manual, Paul Rank manual, and factory manuals. The Drum condition is my question, Again, They both look like they were turned on a lathe. Any comments appreciated .