Would like to say thanks for everyones help and input in my chin issue.
It is full resolved now after a new sprocket,chain , carrier.
Little help from power republic on set up sprocket with front sprocket.
I fitted the new sprocket and nipped up the bolts and it runs smoothly and no tight sports.
When i tightened up sprocket nuts very tight it goes back tight and un smooth.
So running it now nipped up.
Thanks again everyone