I purchased a 2003 VRSCA last summer, a few months ago I removed the rear wheel to have a new tire installed. When removing the axle I noticed the proper clip and nut were missing. The threaded end of the axle Is damaged, now the axle has a hole in it and there is a castle nut with a split pin going thru the nut and axle. When I torque the nut to the proper spec. the groove in the nut and hole in the axle were not lined up. I had to further tighten the nut to install the pin. I have 3,000 miles on it since then, the wheel spins free with no binding. Is it better to leave it alone or replace the nut and pin with a locking or jam nut? Will this type of nut prevent an accurate torque reading?