running into problems putting together the back sprocket. the pictures in the manual are black n white n hard to make out and i couldn't find anything here when i searched. i'm pretty sure i was doing it right, but my dad thinks i mite be doing it wrong and he's a bit more mechanically inclined then me. i had it set up sprocket, metal rings, rubber ring, spokes, rubber ring, other metal ring, washers/bolt. is this the right order? or did i do something wrong?