rubbing

Ok, so I'm 230lbs and that is a large portion of my problem but..... I just picked up a Doodlebug (I think) with a GUTLESS 79cc Predator (it's going in the kids Go-Kart) and I plan on putting a Predator 212 into the DB. Right now my biggest concern is the sprocket. I'm thinking a larger...

Here's my brake setup on a stock Azusa kit. My concern is that I can't get the rear wheel to spin without rubbing the brake shoes in spots. When I try to adjust it out, then the actuator spring does nothing and I end up with slop in the cable. Do these brakes need to be worn in?