Complex sentence: Another possible problem with an iCVT is that the pins of the variator pulley can fall-out when they are not engaged with their chain, and wear of the pins and the grooves of the pulley halves can cause some serious performance and reliability problems.
Split into simpler sentences: Another possible problem with an iCVT is that the pins of the variator pulley can fall-out when they are not engaged with their chain. And wear of the pins and the grooves of the pulley halves can cause some serious performance and reliability problems.