Thanks Jim, The one front drum on the truck had a wobble.Indicated by the machine shop, on turning the drums. Sure
enough I installed it on the axle and it was spinning in and out. I purchase a new one from Rockauto. The old drum looked good with no grooves. But intill I spun it on the Axle and could see the warpness. Don't take nothing for granted, check all the
parts.