17 tooth sprocket and Stock chain/rear sprocket??

[Kenstogie]

i am in the process of setting up my new Tao TBR7 (probably applies to the Hawk as well) and I greased the rear swing arm and shock pivot points and all was going well....

i put on a 17 tooth sprocket in the front and figured i would try it with the stock chain and stock rear sprocket (46 teeth i think) and see how that gearing is BUT.....

..... the stock chain just did not seem to be long enough but it was really really close ....as in only one sprocket tooth off.... 99% sure the rear axle was as far forward as it would go....

do they fit together? did i do something wrong?