I may have missed discussion on this before though I did look.
Looks like I'm only getting less than 10-12,000 miles before they start to loosen up.....at least half of that track use, so yep, that's stressful.
RSS, of course, does not sell parts for their arms.

 

Replying for the update.

 

Replaced the arms.....second time.
Next time I will just go back to Porsche GT3 arms.

 

RSS stuff is garbage. All the aftermarket stuff uses very cheap heim joints which wear out quicly. Go with OEM or Porsche Motorsport. I run the Porsche Motorsport RSR arms on my car and after 7 years of hard track use they are still as good as now. PM uses aerospace grade Hirschmann helm joints.