Wheel Spigot advice

I have run sport 19 in wheels on my p38 for over a year approx 15k miles no problem until about 3 months ago vibration etc what had happened was that I had the wheels balanced as the tyres were mid worn when they did this they ended up with two spigots on one wheel and obviously one wheel had none this caused a bit of vibration not much but what it did was knock out the bushes on the radius arm fortunately I caught it all in time so a word of advice if anyone takes the wheels of check that the spigot rings have been replaced properly - hope this helps someone.