Problem is ,, I would get my hand stuck ,, like trying to snag a candy bar from a vending machine . I will be removing the wheels to clean them ... hopefully it will all come off . I did try wd40 , Dawn dishwashing soap , a entire can of brakeleen and mr.clean magic eraser and a lot of elbow grease just to get them the way they look in the pic above ... I will be trying the above mentioned recommendations when I start tearing into the truck .