axel locknut problems

[81 clark racing]

after i did my hotcams now my stock axle lock nut keeps looseing up. only the piece that goes towards the rotor. any ideas on how to get it tight or should i buy and aftermarket one. ive all ready tried lock tight

[Scro]

The best solution would be to buy aftermarket. But I just locktite my stock one and wrap it with electrical tape. It won't come loose, and you will be surprised how long it will last.