Complex sentence: The duo's relationship with Spector however ended in some acrimony; in 1966 they signed with Verve/MGM Records, leading to a lawsuit from Spector, which MGM settled with a $600,000 payment to Spector.
Split into simpler sentences: The duo's relationship with Spector however ended in some acrimony. In 1966 they signed with Verve/MGM Records, leading to a lawsuit from Spector, which MGM settled with a $600,000 payment to Spector.