Abro thread lock.

Apply to threads to prevent nuts or bolts from vibrating loose. As soon as you tighten things up and the glue is deprived of oxygen, it starts to dry. A definite must for all two-stroke tuners. Works wonders on wheel and crankshaft nuts etc. If you use thread lock you will no longer need spring washers to prevent nuts from loosening.

Red = Permanent.
Blue = Removable.