Awhile back I had to remove the left front fender on my 2012 RTL to repair wiring for lights. I noticed when I removed the 2 bolts that they had some kind of thread locker on them. In my infinite wisdom (NOT) I thought it wasn't needed, so I replaced without locker. Well I was riding the other day and I noticed that fender was vibrating a lot more than the other fender. So when I got home checked and sure enough bolts were loose. So question is what type of tread locker should I use the prevent this, red, blue, or other?