I haven't moved the 60 much in the last few months and when I did one wheel was just about locked down. Having it up in the air I figured it just needed some adjusting, no help, wheel would not spin by hand even with adjuster all the way out. Took drum off and this is what I found, no groove in the drum, some pad left but a ton of this stuff. Dosen't look like any leaks just this.....cleaned the drum with brake cleaner and it looks fairly good now.