On my china girl my new 41t sprocket from bgf was put on today with joy after figuring my original sprocket was warped, it had a slight wobble but only rode it for about 250 miles, the new one I put on makes my chain tight to where I adjust it to half inch slack turn the wheel a quarter turn and I got an inch to1 1/16th, I closely watched my chain and sprocket connection at the bottom and indeed it feeds it at a slight wobble when I take it for a spin when chain pops when start peddling and if not then , for sure pops when I try to start it, then my stock chain tentionier goes into my spokes ND those are upgraded bolts,I have bent wrenches trying to muscle them tight as possible, any ideas? Sorry long post