So, I made my attempt at mounting my rear 36t sprocket to my Schwinn Delmar following the horrible assembly guide sent to me by the distributor. And it's made a weird problem. I finished everything up, flipped over the bike and tried to "Peddle" the bike by hand to make sure the rear tire would go smoothly. It wouldn't. (SURPRISE!) Instead, the rear tire only moves in "Jerks", and at the end of each of these jerks the muffler emits a "PUT" sound. As if the engine was trying to start or something... I've included some pictures of my rear hub and sprocket. I'm 150% sure I did something wrong in that area. Will someone help me figure out what's going on? Please be gentle with me, I'm a newb with a black and white photo copied guide with nearly no pictures on it. I've spent nearly 20 hours straight constantly met with failure and only a tin of Altoids to keep me sane.