I have an oil leak from the seal behind the front sprocket. I just put a new front sprocket on at the beginning of this year. I noticed the nut that holds the sprocket on was loose when I disassembled it. The lock washer was holding it in place but it was loose. I torqued it to spec when I installed the front sprocket. My question; Do you guys that work on these often use the torque spec or are you tightening the nut more? I am thinking that the nut being "loose" allowed the sprocket to vibrate some and cause the seal to go bad. The seal is original on an 08 so it could have also been just normal wear but when I took it off in the spring time to install the new front sprocket I had to use an impact gun to loosen the nut. Thanks in advance for any input!