[MrFlippant]

+1 for the IPA technique. I use it on pretty much every kind of rubber that *might* have that happen, which is pretty much anything other than stock Scalextric or Carrera rubber, or urethane. 

I include a demonstration in my G&S Tire Grinder setup and use video:
https://youtu.be/5vuEkP1133g?si=DN2mYQ9-XAK4lEw4&t=931s

If this starts at the beginning, skip to 15:31 to see the demo: