I was changing my fluids and when I was tightening my trans drain plug it felt odd. It would not tighten right. I was using a torque wrench at 17 ft lbs. So I took the plug back out and the threads came out. Is there an over size plug that can be used or am I just screwed. This is the first oil change for me on this bike, as I bought it used last fall. Any comments would be very helpful as I am new to owning a Harley. Thanks in advance.