gday Arthur,just nip those four bolts down then a little more,avoid trying to torque any 6mm bolts in aluminium as they are prone strip out,the bolts being too tight wont affect the clutch drag,it may just be worn out,they get to a point where you cant adjust them to either not slip or drag,follow the manual adjustment again and be sure the cable also is free to slide nice and not binding,where abouts are you?im on the gold coast.