Tamiya Mini 4WD - Preventing Lock Nut Pop-Outs

[@antonioiiielarmo9247]

I wish I have a black mach frame too

[@aldoalz]

that is very useful tip, thank you

[@kitphanyom-ji3zx]

Have you ever had an issues with the FMA drive safe loosen off and not driving the rear wheels..?? Any tips or know who about that..?? My FMA keep freeing and loosen off the pinion on the drive shaft at the front end and it can't drive thr back wheels..!!