21 clutch problem

after curing faulty coil i decided to fit 21 tooth clutch gear, no problem changing over just swapped 1 for the other went out for run and when you pull off in first you get a graunching sound then the clutch kicks as you let it out through the other gears its fine just pulling off in first is it slipping then kicking in

Are you using the old clutch[?[]not cosa) as there is a small hole in the basket that lines up with a small hole in the back plate so that the springs are slightly off line,which helps it release


I am not sure I understood , but check the way you have mounted the clutch discs.