Ok .. if a new master cylinder isn't available has anyone experienced problems rebuilding 1941 master cylinders? ... meaning, I have rebuilt many wheel cylinders and masters and I would like to rebuild the one I have but if there have been problems rebuilding them yourself I would like to know ... I believe the master and wheel cylinders were rebuilt more than 10 years ago the car had very very little use since then , and when I opened up the wheel cylinders they were gunked up and barely moving ... I tried to extensively clean and rebuild them by cleaning the bore with 800 wet dry paper one began to leak where it didn't leak before hand ... but because of the desire to do as much as I can, such as rebuilding as opposed to buying one that has been rebuilt by a vendor, I don't want to end up with a master that doesn't work properly or leak ... any information would be appreciated .. thanks ...Bob