How much did you get the drums turned down. You may want to look at the wear pattern. There may not be full contact with the shoes on the drums. If this is the case, they should improve some with use.

1951 GMC 1 Ton Flatbed -- It is finally on the road and what a great time I have driving it!
1951 1 Ton Completed

My Chevy Master 4 Door is on the Road!