Familiarity issue | BUG

Small issue, my company in the lite campaign V4 doesn’t seem to be able to gain familiarity with solid disk brakes. Designed and produced 2 cars with solid diks but familiarity is still on a steady zero.
Probably some engineers with alzheimers that need a little help?
All the drum brakes and other parts are gaining familiarity as they should up untill now. I’m in 1973-ish


We’ll have a look!