need some help for a panama jack build..

[shark_bait_OOOHAHA]

I dont think I put enough space in between the sprocket and spokes of the wheel? can some one who has done panama jack build post pictures zooming in to the axle? To show how many rubber spacers and if not metal spacers are there? My chain is also rubbing on my fender because of this.... I already did a search and cant find any pictures that are zoomed in to it...