While adjusting the rear brake on my 61 plate Yamaha Ybr125, I noticed the rear wheel wouldn’t move round when I tried to turn it round, even the adjustment was quite loose, however the rear wheel did turn around when I turned the engine on, whilst on the centre stand. I was wondering if maybe the rear brake drums are either worn or just very stiff. I was looking at the work history and I’m sure the pads where last replaced on Jan 2017. I only hope they have completely gone.My guess is this. Any advice anyone? I would appreciate it. Thanks.