2009 Yamaha YZF R6S
I guarantee they are not tight enough if you stopped when the clutch started turning in nuetral. They will back out and do far more damage than a $20 torque wrench! You need to take the cover back off and torque them down. The specified torque is 5.8 lb-ft. That’s about 2 fingers tight on a 1/4 inch drive ratchet. And they should be tightened in stages in a crisscross pattern. I still say go to AutoZone and borrow 1/4 inch drive torque wrench. Yeah, you have to put money down on a card, but they give it back when you return the tool.
how much damage was done to the threads on the sprocket nut? All of this may be pointless if the sprocket threads are messed up and you can’t get the sprocket nut to tighten (oh, and that’ll need blue locktite)