I removed the return rollers on my pzr3 when I was painting it. First i carefully pried off the outer return roller wheel. Luckily the glue guy didn't go nuts like he does on some tanks. Then useing a wire nipper from radio shack I eased out the metal pin while supporting the inner return roller wheel and it's support piece. Be sure to support the inside of the tank hull wall when you re-insert the metal pin that holds the return roller.