Drum Brakes Sticking

You know, I haven't read anything yet about flushing the brake system BEFORE you replace any hydraulic parts, as any contamination in the brake lines will just get pumped into the new parts. This can cause the system to fail, even though you replaced everything. To make sure that everything is up to snuff, I would take the drums to a local machine shop or repair shop that does brake jobs and have the run-out checked on the NEW drums. Are they imports or oe type ? Brake lining type ?Brakes systems are very basic. Just start at the beginning and don't ever assume anything. Check each part before you install it to make sure there are no problems. Then if you have to diagnose a problem later, you will know for sure that you already checked that item. Take every thing off and start over. If you don't have one, go on line and look up your year and model of brake system you have and just print out the pictures and the printed info. Again don't assume anything. Take your time. Enjoy.